Solve the problem.For what positive numbers will the cube of a number exceed 8 times its square?
A. x|0 < x < 8}
B. x|0 < x < 64}
C. x|x > 64}
D. {x|x > 8}
Answer: D
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Rationalize the denominator. Assume variables represent non-negative values.
A. 
B. 13
C. 
D. 4
Use the given transformation to evaluate the integral. src="https://sciemce.com/media/4/ppg__10611192124__f1q28g7.jpg" alt="" style="vertical-align: -4.0px;" />
A. 28 sin 1
B. 14 sin 1
C. 28 sin 2
D. 14 sin 2
Rwhere R is the trapezoid with vertices at 
Solve the problem.It is necessary to have a 40% antifreeze solution in the radiator of a certain car. The radiator now has 20 liters of 20% solution. How many liters of this should be drained and replaced with 100% antifreeze to get the desired strength?
A. 8 L B. 6.7 L C. 5 L D. 10 L
Solve the problem.A shoe company will make a new type of shoe. The fixed cost for the production will be $24,000. The variable cost will be $37 per pair of shoes. The shoes will sell for $104 for each pair. How many pairs of shoes will have to be sold for the company to break even on this new line of shoes?
A. 67 pairs B. 359 pairs C. 231 pairs D. 649 pairs