Solve the problem. Round your answer to three decimals.What annual rate of interest is required to triple an investment in 4 years?
A. 15.804%
B. 27.465%
C. 18.921%
D. 31.607%
Answer: B
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Solve.Find the lateral surface area of the cone generated by revolving the line segment 
, 
about the 
A. 48?
B. 12?
C. 48?
D. 12?
Use a table of values to graph the plane curve defined by the following parametric equations. Find a rectangular equation for the curve.x = 8 sin t, y = 8 cos t, for t in [0, 2?] 
A. 
y = x2 - 9, for x in [-2, 2]
B. 
y = 
= 64, for x in [-8, 8]
C. 
x2 + y2 = 64, for x in [-8, 8]
D. 
y2 - x2 = 64, for x in [-8, 8]
Translate to an equation and solve.86% of what number is 215 ?
A. 86 B. 43 C. 250 D. 40
Solve the problem.Jon has 976 points in his math class. He must have 74% of the 1500 points possible by the end of the term to receive credit for the class. How many additional points he must earn by the end of the term to receive credit for the class?
A. at most 524 points B. at least 134 points C. exactly 722 points D. at least 1110 points