Algebra and Functions

Transcription

1 9. Which of the following inequalities represents the statement, number,, decreased b 1 is less than or equal to 9? < 9 M shopkeeper has kilograms of tea in stock. He sells 1 kilograms and then receives a new shipment weighing kilograms. Which epression represents the weight of the tea he now has? M ivide a number b and add to the result. The answer is 9. Which of the following equations matches these statements? n = 9 + n + = 9 = n n + = 9 M0000. In a certain room, the number of chairs, c, is equal to times the number of tables, t. Which equation matches the information? i c = t i t = c i c = i t c i t =. t a local bookstore, books that normall cost b dollars are on sale for 10 dollars off the normal price. How man dollars does it cost to bu books on sale? b 10 b + 10 b 10 b + 10 ( ) ( ) 1. If n = and =, then n( ) = If h = and k =, then hk + = M0010 M107 M000 M000

2 istance (kilometers) ar ar 1 Time (hours). fter three hours of travel, ar is about how man kilometers ahead of ar? M The cost of a long distance call charged b each of two telephone companies is shown on the graph below. ost ($) ompan ompan 8. The graph below compares the weight of an object on Earth to its weight on the Moon. Weight on the Moon (pounds) n Object s Weight on the Moon Weight on Earth (pounds) What is the approimate weight on the Moon of an astronaut who weighs 10 pounds on Earth? 1 pounds 0 pounds pounds 0 pounds.7 M Minutes ompan is less epensive than ompan for all calls. minute calls onl. calls less than minutes. calls longer than minutes. M080

3 9. m works as a computer consultant. She charges $0 per hour for her work. Which graph shows the relationship between the number of hours m works and the amount of mone she charges for her work? 0 0 Total Total mount harged mount harged (dollars) (dollars) 00 Total Total mount harged mount harged (dollars) (dollars) Hours Worked Hours Worked Hours Worked Hours Worked M119

4 70. = 7. Simplif the epression shown below. 9 ( ) 71. What does equal when =? M z 0 z 0 z 0 z ( z )(8 z ) M Simplif the epression shown below. (a bc )(7ab c ) 1 1abc 1a bc a bc a bc M187 M Which of the following is equivalent to ( )( )( + )? 7. Which epression is equivalent to 7abi7bc? ( ) ( + ) 1a bc 9 abc ( )( + ) ( ) ( + ) 9abc a bc M18 M = M007

5 77. Which of the following is the graph of = 1? _ 0 _ 0 _ 0 _ 0 M010 7

6 78. Which of the following could be the graph of =? M000 8

7 79. Which equation EST represents the part of the graph shown below? 81. The slope of the line shown below is. d 0 =1. 7 =1. 7 = 17. = 17. M1070 What is the value of d? 9 M0078 _ 0 _ 80. What is the slope of the line shown in the graph above? 1 1 M0 9

8 8. What is the equation of the graph shown below? = 1 = +1 = + = 1 M00 8. What is the slope of the line below? 0 (, ) (, ) M0077 0

9 8. The graph below shows Francine s electric bill for different months. What is the price per kilowatt-hour of Francine s electricit? ost $70 $0 $0 $0 $0 Monthl Electric ill September October November ecember 8. In the inequalit + $ 10, 000 $ 70, 000, represents the salar of an emploee in a school district. Which phrase most accuratel describes the emploee s salar? t least $0,000 t most $0,000 Less than $0,000 More than $0, Solve for. = 7 M01 $0 $ Kilowatt-hours $0.1 $0.0 $1.0 $.7 M0771 M081 1

10 87. Solve for n. n < n < n < n < 7 n + < 17 M Stephanie is reading a -page book. uring the past 7 das she has read 18 pages. If she continues reading at the same rate, how man more das will it take her to complete the book? The owner of an apple orchard ships apples in boes that weigh kilograms (kg) when empt. The average apple weighs 0. kg, and the total weight of a bo filled with apples is 1 kg. How man apples are packed in each bo? rad bought a $ binder and several packs of paper that cost $0.0 each. If his total was $1.0, how man packs of paper did rad bu? 1 M107 M1 M Robert s to car travels at 0 centimeters per second (cm/sec) at high speed and 1 cm /sec at low speed. If the car travels for 1 seconds at high speed and then 0 seconds at low speed, what distance would the car have traveled? 100 cm 100 cm 1 cm 7 cm M Sara can ride her biccle miles in 1 minutes. t this rate, how man miles can she ride her biccle in 0 minutes? M1177