What is the least common multiple of 8, 2, 3a, 6b, and 4ab?
(A)16ab
(B) 24ab
(C) 24a2b
(D) 54ab
(E) 60a2b
The percent P of a population that has completed 4 years of college is given by the function P(t) = -0.001t2 + 0.4t where t represents time, in years. What percent of the population have completed four years of college after 20 years, to the nearest tenth?
(F) 0.1 (G) 7.6 (H) 8 (J) 8.4 (K) 160
Correct Answer: G
Factoring the polynomial x12 -9 reveals a number of factors for the expression. Which of these is NOT one of the possible factors?
(F) x6 + 3 (G) x12 - 3 (H) x3 + (J) x3 - (K) x3 -
Correct Answer: K
Sebastian bought a meal at a restaurant and left a 15% tip. With the tip, he paid exactly $35.19. How much did the meal cost without the tip?
(A) $28.98(B) $29.91(C) $30.15(D) $30.60(E) $30.85
Correct Answer: D
More ACT Math Exam Questions
- 1
When calculating a certain tax, Simone found that no tax is due for all income up to pdollars, with p > 0. Income greater than pdollars is taxed at a rate of 15%. Which of the following graphs accurately represents this tax?
- 2Given that a = (3, 2) and b = (15, 8) in the standard (x, y) coordinate plane, what is the distance from a to b?
- 3
The noncommon rays of 2 adjacent angles form a straight angle. The measure of one angle is 4 times the measure of the other angle. What is the measure of the smaller angle?
- 4Which of the following lists contains only prime numbers?
- 5
Whenever x and y are both integers, what is (6.0 × 10x)(5.0y × 10y)expressed in scientific notation?