Form a polynomial f(x) with real coefficients having the given degree and zeros.Degree: 4; zeros: -1, 2, and 1 - 2i.
A. f(x) = x4 - x3 + 3x2 - 5x - 10
B. f(x) = x4 - x3 + x2 + 9x - 10
C. f(x) = x4 - 3x3 + 5x2 - x - 10
D. f(x) = x4 - 3x3 - 3x2 + 7x + 6
Answer: C
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Solve.The annual depreciation rate r (0 < r < 1) of a car purchased for P dollars and worth A dollars after t years can be modeled by the following formula: 
Find the depreciation rate of a car that is purchased for $31,000 and is sold 4 years later for $14,000. Express your answer as a percentage, and round the answer to the nearest whole percentage.
A. -18% B. 18% C. 82% D. -82%
Solve by the quadratic formula. If there are no real roots, say so.6n2 = -12n - 3
A. n = 
B. n = 
C. n = 
D. n = 
Find the volume area of the figure. Use 3.14 for ?. Round the answer to the nearest hundredth when appropriate.
A. 102.05 cu. ft B. 255.13 cu. ft C. 204.1 cu. ft D. 1,020.5 cu. ft
Solve using the quadratic formula.x2 + x + 9 = 0
A. 
B. 
C. 
D. 