Multiple Choice
12. What is the prime factorization of 620?
A. 2 e . 5 • 7 C. 22 • 5 • 31
B. 2 • 5 • 61 D. 27•5
13. What is the greatest common factor of 15x3y5 and 6xy2?
F. 30x3y5 G. 3xy2 H. 3x3y5 I. 30xy2
14. Suppose you deposit $400 into an account that earns 3% simple annual interest. What is the account balance after 9 months?
16. You toss a coin 15 times, and the coin lands heads up 9 times. What is the experimental probability that the coin lands heads up?
A. 0.4 B. 0.5 C. 0.6 D. 0.9
17. What is the solution of the equation 1.6x — 5.2 = 9.28?
F. 1.48 G. 2.55 H. 9.05 I. 11
18. Simplify the expression 4r3 —5— • 15r2 14 • 6r5 6r6
64r5 6 r A. B. C. D. 64 7 75 75
A. $9 15. Given AABC B. $108 C. $409 ADEF, what is D. $508 the length F 19. What is the percent of change from 76 to 190?
F. 60% G. 114% H. 150% I. 350% of DE?
20. A map has a scale of 1 cm :150 m. If a map distance is 2.5 centimeters, what is the 1.2 m actual distance?
A 3 m A. 151.5 meters B. 225 meters B8m C D E C. 300 meters D. 375 meters F. 211i G. 4.5m H. 24m I. 32m
