Factor the trinomial that is a perfect square. If it is not a perfect square, respond "not a perfect square."x2 - 4x + 16
A. (x - 4)2
B. (x + 4)(x - 4)
C. not a perfect square
D. (x + 4)2
Answer: C
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Find the length.
A. 3 inches B. 2 inches C. 2.5 inches D. 0.5 inches
Simplify.-4(4y2 + 2y - 2) - 7(4y2 - 7y + 5)
A. 44y2 + 41y + 27 B. -44y2 + 41y - 27 C. -44y2 - 41y - 27 D. -44y2 + 41y + 27
Solve the problem.Elizabeth measured the height of her tomato plant at 28.92 cm. Two weeks later she measured it again and found that it was 31 cm. How much did the plant grow during the two weeks?
A. 59.92 cm B. 2.08 cm C. 2.18 cm D. 3.08 cm
Solve the problem.A chair manufacturing company has two different factories. The profit function for Factory I when x chairs are manufactured and sold is as follows: P(x) = -0.05x2 + 20x - 500The profit function for Factory II when x chairs are manufactured and sold is as follows: P(x) = -0.05x2 + 30x - 2500For what number of chairs is the profit the same at both factories, and what is the profit?
A. 0 chairs; $0 B. 300 chairs; $2000 C. 100 chairs; $1000 D. 200 chairs; $1500