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Name ___________________________________ Extended Problem of the Week #15 Review for CMA2: Part One – Multiple Choice (1 pt. each) 1. Date _______________ Due: _____________ Score ________ (No calculators allowed for this part) What is the greatest common factor of 12, 18, 24? a) 2 2. The nearest star, Alpha Centauri is about 25,000,000,000,000 miles away. How is this number represented in scientific notation? a) 2.5 x 1015 b) 6 b) 2.5 x 1013 c) 12 c) 25 x 1012 d) 72 d) 25 x 109 3. Alyssa works as an interior decorator. She charges a $75 consultation fee and $50 for each hour, h, she spends shopping or working in the house. Which expression represents the total amount Alyssa charges? 4. Which of the following subsets is taken from the set of rational numbers? a) { , 2, 2 1 , } 3 5 1 , 0.375, 4.2} 6 1 1 5 c) { , , , 2 } 2 6 2 9 d) { , 3 , 7, 100} 2 6. Simplify the expression: b) { 16 , 5 a) (75 + 50)h b) 75 + 50h c) 75h + 50 d) 75 + (50 + h) 5. Which value represents 10-3 as a decimal? a) 0.1 b) 0.01 c) 0.001 d) 0.0001 7. What is the least common multiple of 10, 15, and 20? a) 5 b) 10 c) 20 d) 60 42 – 23 a) 2 b) 4 c) 6 d) 8 8. At 4pm the temperature was 8˚. The temperature was -4º by midnight. What was the difference in temperature from 4pm.to midnight? a) -4 b) 8 c) 12 d) -12 Part 2: Use a calculator You MUST show all work in order to receive full credit!! 9. Write the prime factorization of 180 in exponential form. Answer: _____________________ 10. Solve and Check the following equation. 2(5x - 6) - 3x = 30 Check Answer: x=____________ 11. The height of a can is 8in. and the length of the radius is 3in. Part A What is the total surface area of the can? 3in 8in Answer: ______________ Part B Mackenzie wants to cover the cylinder with fabric. She needs to buy some fabric glue. If one bottle 20 square inches, how many bottles of glue does Mackenzie need to purchase to have enough glue to cover the cylinder? Answer: ______________ ak