Solve the problem. Round your answer to the nearest cent.Brad invests $8900 in an account paying 10% compounded monthly. How much is in the account after 13 months?
A. $9868.07
B. $9913.88
C. $30,725.21
D. $8980.38
Answer: B
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Find the volume of the indicated region.the region bounded by the paraboloid 
, the cylinder 
, and the 
A. 
?
B. 2048?
C. 
?
D. 1024?
Solve the problem.In a recent year, the per capita debt of state X was about $4 thousand. If the total debt of the state was approximately $36 billion, estimate the population of the state.
A. approximately 10 million B. approximately 8 million C. approximately 9 million D. approximately 36 thousand
Solve the variation problem.The amount of simple interest earned on an investment over a fixed amount of time is jointly proportional to the principle invested and the interest rate. A principle investment of $3200.00 with an interest rate of 8% earned $1280.00 in simple interest. Find the amount of simple interest earned if the principle is $4600.00 and the interest rate is 6%.
A. $1840.00 B. $960.00 C. $1380.00 D. $138,000.00
Find a rectangular equation for the curve and describe the curve.x = 4 cos t, y = 4 sin t; -? ? t ? ?
A. x2 + y2 = 4; circle with radius 4 B. x2 + y2 = 16; portion of a circle with radius 4 C. x2 + y2 = 16; circle with radius 4 D. x2 + y2 = 16; ellipse