Solve the problem.Find the volume of the solid generated by revolving the region in the first quadrant bounded by the x-axis and the curve y = sin 4x, 0 ? x ? ?/4 about the line x = ?/4.
A. 
?2
B. 
?
C. 
?2 - ?
D. 
Answer: A
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Solve the problem.Samuel plans to save $200,000 in a college savings account over 15 years. The APR is 6.0% compounded monthly and contributions to the account are made at the end of each month, including the last month. What should Samuel's monthly contribution be? Round your answer to the nearest cent.
A. $407.48 B. $687.71 C. $622.88 D. $762.47 E. $693.59
Solve the problem.The height of the tower is 9 times the height of the building next to it. If the tower is 36,000 ft tall, then what is the height of the building?
A. 7000 ft B. 4000 ft C. 6000 ft D. 5000 ft
Solve the problem.Four years ago, you invested $1000 in an account that returns 5.7% annually. The table shows the value of your investment at the end of each year.
Do these data represent a linear function?
A. No B. Yes
Solve the system graphically. Give x- and y-coordinates correct to the nearest hundredth.y = ex + 3x2 - 4y2 = 11
A. {(2.75, -1.28)} B. {(2.75, 1.28)} C. {(1.04, -0.14), (3.52, -1.69)} D. {(-3.52, 0.59)}