Factor the trinomial completely. If the polynomial cannot be factored, write "prime."5y4 + 50y3 + 80y2
A. 5(y2 + 8)(y2 + 2)
B. y2(y + 8)(5y + 10)
C. 5y(y2 + 8y)(y + 2)
D. 5y2(y + 8)(y + 2)
Answer: D
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Simplify.6x - {6[5(5x - 5) - (6x + 12)] + 18}
A. -108x + 204 B. -108x - 60 C. -180x + 96 D. -180x + 60
Solve the problem.An auxiliary fuel tank for a helicopter is shaped like the surface generated by revolving the curve 
- 4 ? x ? 4, about the x-axis (dimensions are in feet). How many cubic feet of fuel will the tank hold to the nearest cubic foot?
A. 4 B. 13 C. 17 D. 7
Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest hundred. Does the estimate give you reason to doubt the stated sum?
A. Estimate: 52,600 ; no B. Estimate: 52,500 ; yes C. Estimate: 52,600 ; yes D. Estimate: 52,500 ; no
Use a calculator to approximate the root to the nearest thousandth.
A. -4.448 B. -4.444 C. -4.457 D. -4.452