Solve the problem. Round your answer to three decimals.What annual rate of interest is required to triple an investment in 4 years?
A. 31.607%
B. 27.465%
C. 18.921%
D. 15.804%
Answer: A
Mathematics
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Perform the indicated operation.(6x3 + 4x5 - 5 + 2x4) - (8 + 6x4 + 6x5 + 2x3)
A. 10x5 + 8x4 + 8x3 - 13 B. 10x5 + 8x4 + 8x3 + 3 C. -2x5 - 4x4 + 4x3 - 13 D. -2x5 + 8x4 + 8x3 + 3
Mathematics
Find the center and radius of the circle.x2 + y2 - 16x + 8y + 80 = 36
A. (-8, 4), r = 36 B. (-4, 8), r = 6 C. (8, -4), r = 6 D. (4, -8), r = 36
Mathematics
Find the root if it is a real number.- 
A. 3 B. 9 C. -27 D. -3
Mathematics
Find the derivative of the function.f(x) = (2x3 + 9)(5x7 - 7)
A. f'(x) = 8x9 + 315x6 - 42x B. f'(x) = 100x9 + 315x6 - 42x C. f'(x) = 100x9 + 315x6 - 42x2 D. f'(x) = 8x9 + 315x6 - 42x2
Mathematics