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1 3-1 Guided Exercises Checking Accous Key Math Concepts Total deposit = sum of deposits cash recieved To update the running balance of a check register, add deposits and subtract debits. a + b = b a; a b = a + ( b) 1. Mitchell has a balance of $1,200 in his First State Bank checking accou. He deposits a $ paycheck, a $ dividend check, and a personal check for $250 io his accou. He was to receive $400 in cash. How much will he have in his accou after the transaction? Balance + Deposits + Withdrawal = New Balance 1,200 + ( ) 400 = New Balance 1, = Add the deposits. Mitchell s new blance is. 2. New Merrick Bank charges a $21-per-check overdraft protection fee. On June 5, Lewis had $ in his accou. Over the next few days, the following checks were submitted for payme at his bank: June 6, $875.15, $340.50, and $450.63; June 7, $330; and June 8, $ How much will he pay in overdraft protection fees? How much will he owe the bank after June 8? Check 1st $ nd 3rd 4th 5th Balance $ Subtract each debit for the curre balance. Lewis had checks returned. His bank charges for each returned check. Overdraft fee Number of checks = Total Feeds Paid = Lewis owes his bank in bank fees. Amous of returned checks + bank fees = Total amou Lewis owes the bank + = Lewis owes the bank a total amou of. 36 Financial Algebra Guided Practice Workbook 3-1 or duplicated, or posted to a publicly accessible website, in whole or in part.
2 Exercises 3. Create a check register for the transactions listed. a. Your balance on 1/5 is $ b. You write check 1076 on January 6 for $ to Excel Health Club. c. You deposit a paycheck for $ on 1/11. d. You deposit a $50 rebate check on 1/15. e. On 1/16, you begin writing a donation check to Clothes for Kids but make an error and have to void the check. You write the very next check for $100 to this organization. f. On 1/20, you withdraw $200 from the ATM at the mall. The company owning the ATM charges you $3.50 and your bank charges you $2.50 for the ATM transaction. g. On 1/21, you made a debit card purchase at Stacy s Store for $ NUMBER OR CODE DATE TRANSACTION DESCRIPTION $ PAYMENT AMOUNT FEE DEPOSIT AMOUNT $ BALANCE 4. Dean has a checking accou at City Ceer Bank. During the moh of April, he made deposits totaling $2, and wrote checks totaling $ He paid a maienance fee of $25 and earned $3.24 in ierest. His balance at the end of the moh was $4, What was the balance at the beginning of April? 5. Elaine has m dollars in her checking accou. On December 8, she deposited $1,200, r dollars, and $ She also cashed a check for t dollars and one for $ Write an algebraic expression that represes the amou of money in her accou after the transactions. or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
3 3-2 Reconcile a Bank Stateme Key Math Concepts Revised stateme balance = ending stateme balance + outstanding deposits outstanding debits (withdrawals, charges, and bank fees) A reconciled bank stateme is when the revised stateme balance = check register balance. + means to add to a balance and a means to subtract from a balance. Guided Exercises 1. Pina filled out the following information on the back of her mohly stateme: Ending balance from stateme $1, Deposits outstanding + $ Total of checks outstanding $ Revised stateme balance $ Balance from checkbook $ Find Pina s revised stateme balance. Does her accou reconcile? Revised Balance = Ending Balance + Outstanding Deposits Outstanding Debits Revised Balance = 1, = Perform the calculations. Pina s revised stateme balance is. Her bank accou reconcile because the revised stateme balance is the same as the balance from. 2. On the back of Elise s mohly stateme, she listed the following outstanding withdrawals: #123, $76.09; #117, $400; #130, $560.25; debit card, $340.50; and #138, $ She also determined that a deposit for $500 and the other for $ are outstanding. Using these outstanding transactions, what adjustme will have to be made to her stateme balance? Outstanding Deposits = + = Outstanding Debits = = Stateme Adjustme = Outstanding Deposits Outstanding Debits Stateme Adjustme = = Elise needs to adjust her stateme balance by. A positive adjustme is added and a negative adjustme is subtracted from the balance. 38 Financial Algebra Guided Practice Workbook 3-2 or duplicated, or posted to a publicly accessible website, in whole or in part.
4 Exercises 3. Below you will find Mitch West s mohly stateme and his check register. Use them to complete parts a e in his checking accou summary. Does his accou reconcile? Checking Accou Summary Ending Balance from Stateme a. Deposits Outstanding + b. Total of Checks Outstanding c. Revised stateme balance d. Balance from Checkbook e. Mitch West 23 Sycamore Lane Benridge, NY ACCOUNT NUMBER: A232 STATEMENT PERIOD: 5/15-6/15 STARTING BALANCE $ 2, DATE DESCRIPTION CHECK NUMBER TRANSACTION AMOUNT BALANCE 8/16 8/20 8/22 8/22 8/23 8/25 W/D DEPOSIT W/D W/D W/D W/D 1056 Debit card 1058 Debit Card /26 W/D /27 DEPOSIT 9/1 W/D 1061 $ $ 1, $ $ $ $ $ $ $ ENDING BALANCE $2, NUMBER OR CODE DATE / /16 8/16 8/18 8/20 Best Offer Inc. TRANSACTION DESCRIPTION Dept. of Motor Vehicles AutoWorld Car Nation Deposit PAYMENT DEPOSIT FEE AMOUNT AMOUNT $ BALANCE 2, $ , , , , , , , /21 Pri Makers , /22 Book Bonanza , /23 Fast Freddy s Fast Food , /27 Deposit , /30 Lincoln Savings Bank , /1 VOID /1 Pasta Pete s , /2 Deposit , or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
5 3-3 Guided Exercises Key Math Concepts Divide a perce by 100 to change it to a decimal. Then remove the % sign. Multiply a decimal by 100 to change it to a perce. Then insert a % sign. To change a fraction to a decimal, divide the numerator by the denominator. Simple ierest I = prt 1. Gary deposits $3,700 in an accou that pays 2.15% simple ierest. He keeps the money in the accou for three years, but doesn t make any deposits or withdrawals. How much ierest will he receive after the three years? p r t = I Savings Accous To solve for principal, use p I to solve for rate, use r =. pt I = ; to solve for time, use t rt I = ; pr 3, % 3 = I Write the perce as a decimal. 3,700 3 = After 3 years, Gary will recieve in ierest. 2. What simple ierest rate, to the nearest teh, is needed for $15,000 to double in 8 years? When $15,000 doubles, it becomes. This means the accou would earn in ierest. I = r pt = The simple ierest rate needed is. Write the decimal as a perce. Exercises 3. How much simple ierest would $1,500 earn in 11 mohs at an ierest rate of 3.75%? 40 Financial Algebra Guided Practice Workbook 3-3 or duplicated, or posted to a publicly accessible website, in whole or in part.
6 4. Jesse estimates that it will cost $300,000 to send his newborn son to a private college in 18 years. He currely has $65,000 to deposit in an accou. What simple ierest rate would he need so that $65,000 grows io $300,000 in 18 years? Round to the nearest perce. 5. How much principal would you have to deposit to earn $700 simple ierest in years at a rate of 4%? 6. Dillon has a bank accou that pays 3.2% simple ierest. His balance is $1,766. How long will it take for the amou in the accou to grow to $2,000? Round to the nearest year. 7. How much simple ierest would $1,000 earn in 275 days at an ierest rate of 4.21%? (There are 365 days in a year.) 8. How long will it take $5,000 to double in an accou that pays 5.6% simple ierest? Round to the nearest year. or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
7 3-4 I = prt Guided Exercises Key Math Concepts 1. How much ierest does $5,300 earn at a rate of 2.8% ierest compounded quarterly, in three mohs? p r t = I Explore Compound Ierest To change a fraction to a decimal, divide the numerator by the denominator. Ierest compounded semiannually, t = 6 or Ierest compounded quarterly, t = 1 or Ierest compounded mohly, t = 1 or Ierest compounded daily, t = 1 or For ierest compounded quarterly, t = , % 0.25 = I = Write the perce as a decimal. In 3 mohs, the accou earns in ierest. 2. How much ierest would $2,000 earn, compounded annually, in two years at the rate of 4.2%? p r t = I 2,000 1 = 2,000 = Add the ierest to the principal. 2, ,084 + = The accou balance is after two years. The accou would earn in ierest, compounded annually, in two years. 42 Financial Algebra Guided Practice Workbook 3-4 or duplicated, or posted to a publicly accessible website, in whole or in part.
8 Exercises 3. Margaret deposits $1,000 in a savings accou that pays 5.4% ierest compounded semi-annually. What is her balance after one year? 4. Jonathan deposits $6,000 in a savings accou that pays 3.2% ierest compounded quarterly. What is his balance after one year? 5. How much ierest would $1,000,000 earn at 5% compounded daily, in one day? 6. Kristin deposited $9,000 in an accou that has an annual ierest rate of 4.1% compounded mohly. How much ierest will she earn at the end of one moh? 7. Kelly has d dollars in an accou that pays 3.4% ierest compounded weekly. Express her balance after one week algebraically. 8. Mr. Nolan has a bank accou that compounds ierest daily at a rate of 3.7%. On the morning of December 7, the principal is $2, That day he withdraws $550 to pay for a snow blower. Later that day he receives a $934 paycheck from his employer, and he deposits that in the bank. On December 8, he withdraws $300 to go holiday shopping. What is his balance at the end of the day on December 8? or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
9 3-5 Compound Ierest Formula Key Math Concepts The compound ierest formula is B= P + 1 n, where B is the ending balance, P is the principal, r is the ierest rate as a decimal, n is the number of times compounded in a year, and t is the time in years. APY = 1+ 1 n Guided Exercises 1. Jeff deposits $2,300 at 3.13% ierest compounded weekly. What will be his ending balance after one year? B= P + 1 n ( 4)() 1 B = , B = ( ) ( ) B Substitute and simplify. Round to the nearest ce. Jeff s ending balance will be. 2. Knob Hill Savings Bank offers a one-year CD at 3.88% ierest compounded daily. What is the APY for this accou? Round to the nearest hundredth of a perce. APY = 1+ 1 n ( )(1) APY = 1+ 1 APY = Substitute. Round to the nearest hundredth. The annual perceage yield is. 44 Financial Algebra Guided Practice Workbook 3-5 or duplicated, or posted to a publicly accessible website, in whole or in part.
10 Exercises 3. Ms. Saoro is opening a one-year CD for $16,000. The ierest is compounded daily. She is told by the bank represeative that the annual perceage rate (APR) is 4.8%. What is the annual perceage yield (APY) for this accou? 4. Mr. Weinstein has a savings accou with a balance of $19, It pays 4% ierest compounded daily. What is his ending balance after three years, if no other deposits or withdrawals are made? How much ierest does he earn over the three years? 5. Imagine that you invest $100,000 in an accou that pays 5.9% annual ierest compounded mohly. What will your balance be at the end of 18 years? 6. Danielle has a CD at Crossland Bank. She invests $22,350 for four years at 4.55% ierest, compounded mohly. What is her ending balance? How much ierest did she make? 7. How much more would $5,000 earn in ten years, compounded daily at 6%, when compared to the ierest on $5,000 over ten years, at 6% compounded semiannually? or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
11 3-6 Guided Exercises Key Math Concepts 8x 3 1. Given the function hx ( )=, as the values of x increase towards infinity, use a 4x + 5 table to find out what happens to the values of h(x). x h(x) Find the value of h(x) for the values of x in the table. 8x 3 hx ( )= 4x + 5 Coinuous Compounding Coinuous compound ierest formula: B = pe rt Compound ierest formula: B= P + 1 n As the value of x increases, the value of the function 8x 3 hx ( )= approaches. 4x If you deposit $10,000 at 3.85% simple ierest, what would your ending balance be after three years? , , ,000 8,000,000 50,000,000 I = prt = Substitute. The ending balance = + = What would your ending balance be if the ierest is compounded daily? B= P + 1 n = + 1 ( )( ) Substitute. What would your ending balance be if the ierest is compounded coinuously? B = pe rt = ( )e ( )( ) Substitute. The ending balance with simple ierest is. The ending balance with ierest compounded daily is. The ending balance with ierest compounded coinuously is. 46 Financial Algebra Guided Practice Workbook 3-6 or duplicated, or posted to a publicly accessible website, in whole or in part.
12 Exercises 3. Given the function f( x)= 1 2 x, use a table to find lim f( x). x 4. Given the function f(x) = 2 x, find lim f( x). x 5. Eric deposits $4,700 at 5.03% ierest, compounded coinuously for five years. What is his ending balance? How much ierest did the accou earn? 6. Find the ierest for $50,000 for years at a rate of 4.3% compounded mohly, daily, hourly, and coinuously. 5x 2 7. Use a table of increasing values of x to find lim f( x) if f( x) = x x Find the ierest earned on a $14,000 balance for nine mohs at % ierest compounded coinuously. or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
13 3-7 Future Value of Investmes Key Math Concepts r P + n 1 1 Future value of a periodic deposit: B = r n Guided Exercises Aon opened an accou at BB Bank by depositing $1,250. The accou pays 2.325% ierest compounded mohly. He deposits $1,250 every moh for the next two years. 1. How much will he have in the accou at the end of the two-year period? r P + n 1 1 B = r n , B = B ( 12)( 2) Substitute. 2. Write the future value function. Let x represe each of the mohly ierest periods. Then use a graphing calculator to graph the future value function. What will the appropriate balance be after one year? P + n B = = r n Locate 12 mohs on the x-axis of the graph. x Substitute. At x = 12, y. Aton will have about in his accou after one year. 48 Financial Algebra Guided Practice Workbook 3-7 or duplicated, or posted to a publicly accessible website, in whole or in part.
14 Exercises 3. Sylvia was to go on a cruise around the world in 5 years. If she puts $50 io an accou each week that pays 2.25% ierest compounded weekly, how much will she have at the end of the five-year period? 4. Liam was born on October 1, His grandpares put $20,000 io an accou that yielded 3 ierest compounded quarterly. When Liam turns 18, his grandpares will give him the money for a college education. How much will Liam get on his 18th birthday? Fatima opened a savings accou with $7,500. She decided to deposit that same amou semiannually. This accou earns 3.975% ierest compounded semiannually. Exercises 5-7 are about Fatima s accou. 5. What is the future value of the accou after 10 years? 6. Write the future value function. Let x represe the number of semiannual ierest periods. 7. Graph the future value function. Using your graph, what is the approximate amou in her accou after 18 mohs? or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
15 3-8 Guided Exercises Prese Value of Investmes Key Math Concepts B Prese value of a single investme: P = 1+ n B r Prese value of a periodic deposit investme: P = n 1+ 1 n 1. Martina will be attending 4 years of undergraduate school and four more years of graduate school. She was to have $200,000 in her savings accou when she graduates in 8 years. How much, to the nearest dollar, must she deposit in an accou now at a 2.6% ierest rate that compounds mohly to meet her goal? B P = 1+ n P = 1+ P ( 12)( 8) Substitute. Martina should deposit in her accou. 2. Kate was to install an inground pool in five years. She estimates the cost will be $50,000. How much should she deposit mohly io an accou that pays 3% ierest compounded mohly to have enough money to pay for the pool in 5 years? B r P = n 1+ 1 n P = ( 12)( 5) 1+ 1 P Substitute. Kate should deposit in her accou each moh. 50 Financial Algebra Guided Practice Workbook 3-8 or duplicated, or posted to a publicly accessible website, in whole or in part.
16 Exercises 3. Amber was to have saved $300,000 by some poi in the future. She set up a direct deposit accou with a 1.75% APR compounded mohly, but she is unsure of how much to periodically deposit for varying lengths of time. Set up a prese value function and graph that function to depict the prese values for this situation from 12 mohs to 240 mohs. 4. When his daughter Alisa was born, Mike began saving for her wedding. He waed to have saved about $30,000 by the end of 20 years. How much should Mike deposit io an accou that yields 3% ierest compounded annually in order to have that amou? Round your answer to the nearest thousand dollars. 5. Ahony was to repay the loan his pares gave him in three years. How much does he need to deposit io an accou semi-annually that pays 3.25% ierest twice a year in order to have $35,000 to repay the loan? 6. Uncle Al was to open an accou for his nieces and nephews that he hopes will have $100,000 in it after 25 years. How much should he deposit now io an accou that yields 1.75% ierest compounded mohly so he can be assured of meeting that goal amou? 7. Althea will need $30,000 for her nursing school tuition in 18 mohs. She has a bank accou that pays 2.45% ierest compounded mohly. How much does she have to put in each moh to have enough money for the tuition? 8. Lorna needs $40,000 for a down payme when she buys her boat in 4 years. How much does she need to deposit io an accou that pays 4.15% ierest compounded quarterly in order to meet her goal? or duplicated, or posted to a publicly accessible website, in whole or in part. Financial Algebra Guided Practice Workbook
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