Solve the problem.A mechanic is testing the cooling system of a boat engine. He measures the engine's temperature over time. Use a graphing utility to fit a logistic function to the data. What is the carrying capacity of the cooling system?
A. y = 
, 307°F
B. y = 
, 315°F
C. y = 
, 315°F
D. y = 
, 312°F
Answer: C
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In a school survey, students showed these preferences for instructional materials. Answer the question.
About how many students would you expect to prefer written materials in a school of 650 students?
A. About 9 students B. About 59 students C. About 117 students D. About 234 students
Factor the difference of cubes.8a3 - 27b3
A. (2a + 3b)(4a2 - 6ab + 9b2) B. (2a - 3b)(4a2 + 9b2) C. (8a - 3b)(a2 + 6ab + 9b2) D. (2a - 3b)(4a2 + 6ab + 9b2)
Solve the problem.A radio telescope has a parabolic surface. If it is 1 m deep and 
wide, how far is the focus from the vertex?A = 8 mB = 1 m
A. 2 m B. 4 m C. 16 m D. 1 m
Find the sum of the finite geometric series.12 + 36 + 108 + 324 + 972
A. S5 = 480 B. S5 = 2460 C. S5 = 93 D. S5 = 1452