Find the equation that the given graph represents.
A. f(x) = -x3 + 20x
B. f(x) = x3 - 4x2 + 20x
C. f(x) = -x3 + 4x2 - 9
D. f(x) = x3 + 9x
Answer: A
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Divide. Simplify, if possible.
÷ 
A. - 
B. 
C. - 
D. 
Solve the problem.
The graph of y = f(x) represents the amount of oil in millions of gallons remaining in a tank after x days. (i) Estimate the initial and final amounts of oil contained in the tank. (ii) When did the amount of oil in the tank remain constant?
A. 160 million gallons, 60 million gallons; 12 ? x ? 14 B. 160 million gallons, 20 million gallons; 0 ? x ? 6 or 8 ? x ? 14 C. 160 million gallons, 60 million gallons; 0 ? x ? 4 or 12 ? x ? 14 D. 140 million gallons, 40 million gallons; 8 ? x ? 16
Solve. If necessary, round percents to the nearest tenth and all other answers to the nearest whole.Last year, Lily bought a share of stock for $15.56. She was paid a dividend of
Determine what percent of the stock price is the dividend.
A. 75% B. 7.5% C. 25% D. 1.3%
Factor.8x4 - 18x3 + 9x2
A. x(4x + 3)(2x + 3) B. x2(8x - 1)(x - 9) C. (8x2 + 3)(x2 + 3) D. x2(4x - 3)(2x - 3)