Unit Review. Slide 1 / 65. Slide 2 / 65. Slide 3 / x and -2x. Are Like Terms Are Unlike Terms. 2 5a and 5b. Are Like Terms Are Unlike Terms

Transcription

1 Slide 1 / 65 Unit Review Return to Table of ontents 1 3x and -2x Slide 2 / 65 re Like Terms re Unlike Terms 2 5a and 5b Slide 3 / 65 re Like Terms re Unlike Terms

2 3 4y and 5xy Slide 4 / 65 re Like Terms re Unlike Terms 4 x 2 y and xy 2 Slide 5 / 65 re Like Terms re Unlike Terms 5 22 and 14 Slide 6 / 65 re Like Terms re Unlike Terms

3 6 xy and xy Slide 7 / 65 re Like Terms re Unlike Terms 7 Match the expression 3(-4 + 3) with an equivalent expression. Slide 8 / 65 4(3) + 4(3) 3(-4) + 3(3) 4(3) - 4(3) 3(4) + 3(3) 8 Which algebraic expression represents the number of days in w weeks? Slide 9 / 65 w 7 w/7 w + 7 7w

4 9 Which algebraic expression represents the number of hours in m minutes? Slide 10 / 65 m 60 m/60 m m 10 In the expression 3x + 5, the value of 3 best describes: Slide 11 / 65 the constant the operation the variable the coefficient 11 In the expression 2x + 16, the value of 16 best describes: Slide 12 / 65 the coefficient the variable the operation the constant

5 12 Evaluate the expression 2x, when x = 10 Slide 13 / What operation is being performed between the number and variable in the expression? Slide 14 / 65 addition division subtraction multiplication 14 group of 15 parents buys tickets to a fundraiser show and receives a group discount of $2 off the regular ticket price p. Which expression represents the total cost of the tickets, in dollars? Slide 15 / p (p - 2) p p (15-2)

6 15 music store sells s for $15 and tapes for $3. Which expression could be used to find the dollar total of the sales for an hour if the store sold 8 s and 5 tapes? Slide 16 / 65 (8 + 15) (5 + 3) (8 15) + (5 3) (8 3) + (5 15) (15 8) + (5 3a) 16 There were three times as many adults as students attending a school play. If the attendance was 480, how many adults and how many students attended the play? Slide 17 / students, 120 adults 240 students, 240 adults 120 students, 360 adults 160 students, 320 adults 17 Which of the following is not a variable expression? Slide 18 / 65 4n n + m n

7 18 What is the value of the expression x + y when x = 15 and y = 21? Slide 19 / Evaluate n 2 - m when m = 7 and n = 8. Slide 20 / laire has had her driver s license for three years. ill has had his license for b fewer years than laire. Which expression can be used to show the number of years ill has had his driver s license? Slide 21 / b b b b < 3

8 21 Which situation is best modeled by the expression 25 x? Slide 22 / 65 George places x more video games on a shelf with 25 games Sarah has driven x miles of a 25 mile trip meilia paid $25 of an x dollar lunch she shared with riel George has 25 boxes full of x baseball cards each 22 Evaluate -3x + 5 when x = -2 Slide 23 / Nine decreased by the quantity eight times a number x. Slide 24 / 65 8x x 9x x

9 24 Four more than the quotient of 25 and y. Slide 25 / What is the coefficient of x in the expression 4y x? Slide 26 / Name the inverse operation used to solve this equation: x - 15 = -10 Slide 27 / 65 Multiplication ivision ddition Subtraction

10 27 Name the inverse operation used to solve this equation: 4s = 84 Slide 28 / 65 Multiplication ivision ddition Subtraction 28 Name the inverse operation used to solve this equation: f/4 = 2 Slide 29 / 65 Multiplication ivision ddition Subtraction 29 Name the inverse operation used to solve this equation: x = 30 Slide 30 / 65 Multiplication ivision ddition Subtraction

11 30 Solve the equation: y + 17 = 29 Slide 31 / 65 y = 36 y = 12 y = -12 y = Solve the equation: 2-20x = 162 Slide 32 / 65 x = -8.2 x = 8.2 x = 8 x = Solve the equation: 4.3d = Slide 33 / 65 d = d = d = 67 d = -67

12 33 Solve the equation: k = 2 Slide 34 / 65 k = 14.5 k = k = 0.39 k = 5.22 Unit 34Review Solve the equation: 5/7r - 2 = -1 Slide 35 / 65 r = 7/5 r = 5/7 r = -4 1/5 r = -2 1/7 35 Solve the equation: 3/8 + 1/2w - 4 = 3 Slide 36 / 65 w = 13 1/4 w = 1 13/14 w = 106/4 w = 13

13 36 Solve the equation: -3(2u + 5) + 3.5u = -1u Slide 37 / 65 u = 10 u = -10 u = 4 u = Solve the equation: -4a = 14a - 12(4a+ 10) Slide 38 / 65 a = 10 a = 4 a = -4 a = Solve the equation: 2(x + 6) = 2(-x + 6.5) Slide 39 / 65 x = 13 x = 0.4 x = 4 x = 1/4

14 39 Solve the equation: 5t = 2 - t Slide 40 / 65 t = -6 t = -1/3 t = 1/3 t = 6 40 rectangle is 6 inches longer than it is wide. Write and simplify an expression for the perimeter of the rectangle in terms of the width w. Slide 41 / You and a friend worked in the school store last week. You worked 4 hours less than your friend. Let h be the number of hours your friend worked. Write an expression in simplest form that represents the total number of hours you both worked. Slide 42 / 65

15 42 trail mix contains peanuts, raisins, and M&Ms. In the mix, the amount of peanuts is three times the amount of M&Ms; and the amount of raisins is two times the amount of M&Ms. Let m represent the amount of M&Ms. Write and simplify an expression for the total number of pieces of food in the trail mix. Slide 43 / Write an expression containing three terms that is in simplest form. One of the terms should be constant. Slide 44 / Simplify: 5 2(3x 4) + x Slide 45 / 65

16 45 Shelly lives 500 miles away. Paul drove 65 mph for 4 hours. How many more miles will it take for him to arrive at Shelly s house? Slide 46 / Evaluate the expression (F 32) when F = 41 Slide 47 / x - 18 = 46 x = Slide 48 / 65

17 = 2.5q + 1q - 4 q = Slide 49 / e + 8 = -1 e = Slide 50 / /5y + y - 8 = 11 y = Slide 51 / 65

18 b b = 18 b = Slide 52 / (2m +1) = 3m + 54 m = Slide 53 / x - 4-2x = -(8x + 2) x = Slide 54 / 65

19 54 3(2x + 3) = 2(x - 4) x = Slide 55 / ( v) = -30 v = Slide 56 / /6c /6c = 1 c = Slide 57 / 65

20 57 t the video arcade, Jenny buys 25 tokens. She uses two tokens for each game she plays. Slide 58 / 65 Write an expression for the number of tokens Jenny has left after playing g games. Find the number of tokens Jenny has left after playing 1, 4, 6, 10 and 12 games. 58 ob wants to go to the movies with his friends. The movie theater charges $8 per ticket. ob s friends reserve $48.00 worth of tickets in advance. How many people in total can attend the movie? Slide 59 / 65 Identify the variable Identify the constant Write an equation which includes the number of people attending the movie, the price of each ticket, and the total cost of the movie. 59 Write an expression that has four terms and simplifies to 16x + 5. Slide 60 / 65 Identify the like terms Identify the coefficients Identify the constant terms

21 60 Mary is 5 years older than ob. When ob is 65, 70, and 75 years of age, what will Mary s age be? omplete the chart with an expression containing a variable to explain your answer. Slide 61 / cell phone company is offering 2 different monthly plans. Each plan charges a monthly fee plus an additional cost per minute. Plan : $ 40 fee plus $0.45 per minute Plan : $70 fee plus $0.35 per minute Slide 62 / 65 Write an expression to represent the cost of Plan Write an expression to represent the cost of Plan Which plan would be least expensive for a total of 1 minutes? 62 had complained to his friend that he had five equations to solve for homework. re all of the homework problems equations? Justify your answer. (Put all of the choices that are equations into your responder.) Slide 63 / 65 Math Homework 3x 2 = 2x 4 5-2x = 3x 3(2x + 7) 7x2 + 2x - 3x2-9 E

22 63 The clerk at the bank desk says there is an initial charge of $50.00 to open up a bank account at the Sunny Farms ank. He then explains that after, every account added on will cost an additional $15.50 each. The Smith Family is thinking of opening an account for the family. Slide 64 / 65 Write an equation that represents the cost to open accounts for the family members. What is the greatest amount of family members that open a bank account without exceeding a fee of $50 How much money would it cost if Mom Smith, ad S Sister Smith, and rother 64 The Rainbow Phone Service ompany has a monthly fee of $100 and an additional charge of $6.00 for every data one goes over a month. The ellular Phone Service ompany has a monthly fee of $80 and an additional charge of $10.00 for every data one goes over. The Gomez family is deciding which of these two phone providers to subscribe to. Slide 65 / 65 Write an equation that represents the cost of each phon company s monthly fee. For what number of data over will the total monthly fee both companies be the same? The Gomez family s daughter went over 6 data last mon Which phone service will save the Gomez family the mo if the daughter repeats this bad habit next month?