Solve the variation problem.The distance it takes to stop a car varies directly as the square of the speed of the car. If it takes 112 feet for a car traveling at 40 miles per hour to stop, what distance is required for a speed of 
per hour?
A. 168.07 feet
B. 168.41 feet
C. 180.37 feet
D. 144.06 feet
Answer: A
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Find all critical points and find the minimum and maximum value of the function on the given domain.Domain: [-2, 4]
A. Critical points: -2, 2; maximum value: 7; minimum value: 0 B. Critical points: -2, 0, 2, 4; maximum value: 7; minimum value: 0 C. Critical points: 0, 2; maximum value: 2; minimum value: 0 D. Critical points: 0, 2, 7; maximum value: 4; minimum value: -2, 2
Use the data set {0, 4, 4, 8, 4, 16} to answer the following question(s).The standard deviation of the data set is
A. 25.333. B. 12.329. C. 152. D. 13.266. E. none of these
Factor completely.75a4b - 48b3
A. 3b(5a + 4b)2 B. 3b(5a2 + 4b)(5a2 - 4b) C. 3b(5a - 4b)2 D. (15a + 12b)(5ab - 4b2)
Identify if the whole number is prime or composite.84
A. Prime B. Composite