Standardized Test Practice
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1 Standardized Test Practice Name Date 1. Sallie makes candles using different scents. She sells each candle for $8 on her website. She writes the equation 5 8 to determine how much mone she earns from candle sales. What does the independent variable represent in this situation? a. the number of scents b. the number of candles sold c. the cost of each candle d. the amount of visitors on the website 2. The table shows Adam s age and shoe size. What is the correlation coefficient of the linear regression? Age Shoe Size a. 21. b. 0.7 c. 0.9 d What is the -intercept for the equation ? a. (0, 26) b. (0, 24.5) c. (0, 4.5) d. (0, 6) 4. Student movie tickets cost $8.75. Adult movie tickets cost $ Which function shows the total cost for s student tickets and a adult tickets? a. f(s) s b. f(a) a c. f(s, a) a s d. f(s, a) s a Chapter Assessments 869
2 Standardized Test Practice page 2 5. Which shows the equation 12m 1 4n in slope-intercept form? a. m n b. m 5 2 n 1 40 c. m n d. m n 6. The equation d 5 r t gives the distance d for rate r and time t. Which shows the equation correctl solved for time? a. t 5 r d b. t 5 d r c. t 5 dr d. t 5 d 2 r 7. A compan used the function r() ,000 to predict the amount of revenue the will earn net ear. The compan also used the function c() ,000 to predict the amount the will spend in costs net ear. Which function shows the amount of profit, p(), the compan predicts to earn after costs? a. p() ,000 b. p() 5 1 1,000 c. p() ,000 d. p() , Rewrite the function c() 5 9( 1 ) using the Distributive Propert. a. c() b. c() c. c() d. c() What is the -intercept of the equation ? 2 a. (212, 0) b. (2, 0) c. (0, 2) d. (0, 212) 870 Chapter Assessments
3 Standardized Test Practice page Name Date 10. At a local high school, a student ticket to a soccer game costs $5 and an adult ticket to a soccer game cost $10. For one soccer game, the amount earned on ticket sales was $1,40. Let represent the number of student tickets sold and represent the number of adult tickets sold. Determine the - and -intercepts. Which graph represents this situation? a. b c. d Chapter Assessments 871
4 Standardized Test Practice page A certain prescription medication costs $15 with MedPlus insurance and $75 with HealthPrime insurance. Last month, a pharmac earned $5,850 selling this medication. If 220 prescriptions were filled for people who have MedPlus insurance, how man prescriptions were filled for people who have HealthPrime insurance? a. 4 b. 186 c. 254 d The equation A 5 p r 2 gives the area A of a circle with radius r. Solve the function for radius. a. r 5 2p A b. r 5 A 2p c. r 5 A p d. r 5 p A 1. The table shows Savannah s salar for different ears. What is the linear regression equation? Year Salar ($) 40,000 42,000 46,000 44,500 a. 5 9, b ,625 c ,500 d. 5 40, Which shows the equation in standard form? 2 a b c d Chapter Assessments
5 Standardized Test Practice page 5 Name Date 15. Anna and Dave decide to go into business together selling lemonade during the summer. The each set up a stand outside their house. Anna sells her lemonade for $0.50 a cup and gives awa two cups for free each week. Dave sells his lemonade for $0.75 a cup and gives awa three cups for free each week. One week, Anna distributes twice as man cups of lemonade as Dave. Which function best represents the amount Dave and Anna earned together during this week? a. t() b. t() c. t() 5 2( ) d. t() Steve bought wrenches of different sizes. He spent $20 for each wrench for his toolbo. The epression 5 20 shows how much he spent for the wrenches. What does the dependent variable represent in this situation? a. the number of sizes of wrenches b. the number of wrenches bought c. the number of wrenches in the toolbo d. the cost of the wrenches 17. The table shows the amount of accumulated snowfall during different months. What is the range of the data? Month Accumulated Snowfall (inches) a. 5 inches b inches c inches d inches Chapter Assessments 87
6 Standardized Test Practice page The equation V 5 4 p r gives the volume V of a sphere with radius r. Which shows the equation solved for the length of the radius? a. r 5 V 4p b. r 5 4V p c. r 5 9V 4p d. r 5 V 4p 19. The table shows the number of bacteria at different times during an eperiment. Using a linear regression, about how man bacteria will there be after 24 hours? Time (Hours) Number of Bacteria a. 5 b. 277 c. 469 d Which shows the equation in slope-intercept form? a b c d Chapter Assessments
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