SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.

Transcription

1 Chapter 7 and Practice The actual eam is different SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. The following circle graph displas Chris and Mar Smith's monthl $900 famil budget. Use the circle graph to answer the question. 1) What is the ratio of mone spent on food to mone spent on utilities? 1) ) What is the ratio of mone spent on food to the total amount of the monthl budget? ) The pictograph shows the number of biccles sold at Mountain Biking Mania for a 7-week period. 3) How man biccles were sold in week 5? 3) 1

2 ) During which week was the greatest number of biccles sold? How man biccles were sold that week? ) 5) What was the total number of biccles sold in this 7-week period? 5) Graph the equation. ) + = -5 Label at least two ordered pairs on the line. ) ) = - Label at least two ordered pairs on the line. 7) Find the coordinates of the points in the graph. ) R ) S - - -

3 9) B A 9) ) C 10) D ) 11) G H Find the probabilit of the event if a single choice is made from a bag. 1) A bag contains 5 red marbles, blue marbles, 3 ellow marbles, and 5 green marbles. What is the probabilit of choosing a red marble when one marble is drawn? 1) Solve. 13) In a particular cit, percent of the residents subscribe to the local newspaper. Write as a 13) 3

4 1) Approimatel 1.9% of all students at a cit college commute to school. Write this percent as a fraction or mied number in simplest form. 1) 15) 0.% of what number is 7.? 15) 1) 1 is what percent of 735? 1) 17) Find the simple interest when: Principal = $0, Rate = 7%, Time = 5 ears. 17) 1) The sales ta on the purchase of a truck is $ If the ta rate is 9.7%, find the purchase price of the truck. 1) 19) How much commission will an agent make on the sale of a $9,00 house if she receives 1.% of the selling price? 19) 0) What number is 7% of 0? 0) 1) In a surve of 100 people, 9 preferred relish on their hot dogs. What percent preferred relish? 1) ) In small firms in a certain countr, 7.5% of full-time emploees receive medical insurance benefits. Write 7.5% as a fraction. ) Solve. If necessar, round percents to the nearest tenth, dollar amounts to the nearest cent, and all other numbers to the nearest whole. 3) In a recent surve of 0 people, 1 said that their favorite color of car was white. What 3) percent of the people surveed liked white cars? ) A compan increased the number of its emploees from 300 to 30. Find the percent increase. ) 5) The enrollment at a local college increased 15% over last ear's enrollment of 700. Find the increase in enrollment. 5) ) Find the amount of decrease and the percent decrease if the original amount is 5 and the new amount is -30. ) 7) A sales representative is paid a commission rate of 5.3% on all sales. Find her commission if her sales were $109,330. 7) ) Find the simple interest earned on $300 saved for 1 ears at an interest rate of 11%. ) 9) In the past ten ears, the population of a cit decreased from 155,000 to 15,000. Find the percent decrease. 9)

5 30) % of the lawers in a firm are female. If there are 150 lawers altogether, how man lawers are female? 30) 31) 30% of the emploees in a compan are female. If there are 30 emploees altogether, how man emploees are female? 31) 3) A facilities manager determines that % of the offices, or 5 offices, in the building are not occupied. Find the total number of offices in this building. 3) 33) A sales ta of $1. is added to an item's price of $ Find the sales ta rate. Round to the nearest whole percent. 33) 3) If the local sales ta rate is 7.9%, find the total amount charged for a watch priced at $ 10. 3) 35) A $70.00 dress is on sale for 30% off. Find the discount and the sale price. 35) Translate to an equation and solve. 3) is 15 1 % of what number? 3) 37) 7.5% of 19,37 is what number? 37) 3) 75% of 10 is what number? 3) 39) 19 is % of what number? 39) Write the fraction or mied number as a percent. 0) ) 1) ) ) 11 1 ) 3) 1 3 3) ) ) Write the decimal as a percent. 5) ) 5

6 ) 9. ) 7) ) ) 0.0 ) Twent teenagers were asked to give their current savings account balances. Use the balances shown in the list to complete the frequenc distribution table and construct a histogram. 9) ) Class Intervals (Account Balances) $0-$99 $500-$999 $1000-$199 $1500-$1999 $000-$99 $500-$999 $3000-$399 Tall Class Frequenc (Number of Teenagers)

7 Twent teenagers were asked to give their current savings account balances. Use the balances shown in the list to complete the frequenc distribution table. 50) ) Class Intervals (Account Balances) $0-$99 $500-$999 $1000-$199 $1500-$1999 $000-$99 $500-$999 $3000-$399 Tall Class Frequenc (Number of Teenagers) Draw a tree diagram for the eperiment. Then use the diagram to find the number of possible outcomes. 51) Pick a number from 1,, 3 or, and then toss a coin. 51) Solve the problem. 5) Draw a tree diagram for the eperiment of tossing a coin once then spinning the spinner once. 5) 53) The numbers 1 through 15 are each written on the same size sheet of paper and placed in a bag. You then select one sheet of paper at random from the bag. What is the probabilit of choosing a 7 from the bag? 53) 5) Draw a tree diagram for the eperiment of spinning the spinner once then tossing a coin. 5) 7

8 55) The numbers 1 through 13 are each written on the same size sheet of paper and placed in a bag. You then select one sheet of paper at random from the bag. What is the probabilit of choosing a 5 or a from the bag? 55) Write the percent as a decimal. 5) 00% 5) 57) 0% 57) 5) 00% 5) 59) 77% 59) 0).% 0) 1) 0.5% 1) The bar graph shows the number of students who flunk Dr. Jones' class each ear. ) During which ear(s) did eactl 5 students flunk Dr. Jones' class? ) 3) During which ear(s) did Dr. Jones' have more than students flunk his class? 3) ) During which ear did Dr. Jones' have the greatest number of students flunk his class? How man students flunked during that ear? ) Write the percent as a fraction or a mied number in simplest form. 5) 10% 5) ) 0.9% )

9 7) 7.5% 7) Write the percent as a fraction or mied number in simplest form. ) 1 3 % ) 9) 3.5% 9) Graph the linear equation. 70) = ) ) = -1 71)

10 7) + = -7 7) ) + = -1 73) ) = - 7)

11 75) = - 75) Complete the table. 7) Original Price Discount Rate $9 10% $9 0% $ % $17.0 0% Amount of Discount Sale Price 7) Use the circle graph to solve the problem. 77) The circle graph summarizes the results of a surve in which 500 adults were asked their favorite movie categor. 77) How man of the surve respondents said that the favor action movies? Round to the nearest whole number. 11

12 7) A surve of the 70 vehicles on the campus of State Universit ielded the following circle graph. 7) 10% 15% 33% 9% 7% % Find the number of pickups. Round our result to the nearest whole number. Find the probabilit of the event. 79) If a single die is tossed once, find the probabilit of the following event. A or a 1 79) The line graph shows the recorded hourl temperatures in degrees Fahrenheit at an airport. 0) During which hours shown was the temperature greater than 7 F? 0) 1) What temperature was recorded at 10 a.m.? 1) ) During which hours was the temperature decreasing? ) 1

13 A new car dealership has taken an inventor of the vehicles it has in stock. Below is a histogram indicating the number of vehicles in stock in certain price ranges. Use the histogram to answer the question. 3) How man vehicles in stock are priced $0,999 or less? 3) ) How man vehicles in stock are priced between $1,000 and $0,999? ) Complete each ordered-pair solution of the given equation. 5) - = 3 ; (, 1), (, -3), (3, ) 5) ) + = -33; (-5, ), (0, ), (1, ) ) Translate the question into an equation. Do not solve. 7) 31% of what number is 11? 7) Complete and graph the ordered-pair solutions of the given equation. ) = 3 + ; (0, ), (1, ), (-1, ) )

14 9) = ; (, ), (0, ), (-, ) 9) Translate the question into a proportion. Do not solve. 90) % of what number is 51.9? 90) Use the information given to draw a bar graph. Clearl label each bar. 91) The following table shows the number of female infants born in a certain cit on New Year's Da in various ears. Number of Female Infants Year Born New Year's Da ) Find the amount of increase and the percent increase to complete the table. Round percents to the nearest tenth, if necessar. 9) Original Amount New Amount Amount of Increase Percent Increase 9)

15 Determine what percent of the figure is shaded. 93) 93) 15

16 Answer Ke Testname: 110CH7&P 1) 5 ) 9 3) 0 biccles ) week 7; 10 biccles 5) 530 biccles ) ) ) R(-, 7); S(0, -) 9) A(7, ); B(-5, 3) 10) C(-3, ); D(7, -) 11) G(3, 0); H(-, -3) 1) ) 0.% 1) ) ) 0% 17) $.00 1) $1, ) $9.0 1

17 Answer Ke Testname: 110CH7&P 0) 9. 1) 9% ) ) 0% ) 0% 5) 105 students ) 05; 900% 7) $579.9 ) $ ).5% 30) 3 lawers 31) 10 emploees 3) 5 offices 33) % 3) $ ) discount: $1.00; sale price: $ ) 90 37) ) 90 39) 75 0) 790% 1) 1.5% ) 91 3 % 3) % ) 97% 5) 7.% ) 90% 7) 9% ) % 17

18 Answer Ke Testname: 110CH7&P 9) 50) 51) outcomes 5) 53)

19 Answer Ke Testname: 110CH7&P 5) 55) 13 5) 57) 0. 5) 59) ) 0.0 1) ) 1995, 001 3) 199, 1999, 000, 00 ) 1999, 1 students 5) ) ) 7 ) 9) 70)

20 Answer Ke Testname: 110CH7&P 71) ) )

21 Answer Ke Testname: 110CH7&P 7) ) ) Original Price Discount Rate Amount of Discount Sale Price $9 10% $9.0 $.0 $9 0% $13.0 $55.0 $ % $71.75 $71.75 $17.0 0% $70. $ ) 73 respondents 7) 71 79) 1 3 0) 11 a.m. to 3 p.m. 1) 73 F ) 1 p.m. to p.m. and 5 p.m. to p.m. 3) 0 vehicles ) 15 vehicles 5) (37, 1), (0, -3), (3, 0) ) (-5, 7) (0, -33) (1, -1) 7) 31% = 11 1

22 Answer Ke Testname: 110CH7&P ) (0, ), (1, 9), (-1, 3) (1, 9) (0, ) 5 (-1, 3) ) (, ), (0, 0), (-, -) 10 5 (, ) (0, 0) (-, -) -5 90) 51.9 b = ) Answers ma var. The following is a possible answer

23 Answer Ke Testname: 110CH7&P 9) Original Amount New Amount Amount of Increase Percent Increase % % % % 93) 0% 3