Factor completely. If prime, so indicate.9y2 + 18y + 8
A. (9y + 2)(y + 4)
B. (3y + 2)(3y + 4)
C. prime
D. (3y - 2)(3y - 4)
Answer: B
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Solve the problem.From a thin piece of cardboard 30 in. by 30 in., square corners are cut out so that the sides can be folded up to make a box. What dimensions will yield a box of maximum volume? What is the maximum volume? Round to the nearest tenth, if necessary.
A. 20 in. × 20 in. × 10 in.; 4,000 in3 B. 10 in. × 10 in. × 10 in.; 1,000 in3 C. 20 in. × 20 in. × 5 in.; 2,000 in3 D. 15 in. × 15 in. × 7.5 in.; 1,687.5 in3
The graph of a function f is given. Use the graph to answer the question.Find the numbers, if any, at which f has a local minimum. What are the local minima?
A. f has a local minimum at x = -1; the local minimum is 0 B. f has a local minimum at x = 0; the local minimum is 3 C. f has a local minimum at x = -1 and 1; the local minimum is 0 D. f has no local minimum
Solve the problem.Find -x when x is 22
A. -22
B. 0
C. 22
D. 
Find the product.5(-11x - 7)
A. -55x - 7 B. -55x - 35 C. -11x - 35 D. -90x