The function f is one-to-one. Find its inverse.f(x) = 
A. f-1(x) = (x - 7)2
B. f-1(x) = x2 - 7, x ? 0
C. f-1(x) = 
D. f-1(x) = x2 + 7, x ? 0
Answer: D
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Solve.Suppose that $11,000 is invested at an interest rate of 5.7% per year, compounded continuously. What is the doubling time?
A. 12.2 yr B. 2 yr C. 11.2 yr D. 13.2 yr
Perform the indicated operation.3 - 12
A. -9 B. 9 C. 15 D. -15
Find the equation of the given function with the given amplitude, period, and displacement, respectively.cosine, 5, 
, 
A. y = 10 cos 
B. y = 5 cos 
C. y = 10 cos 
D. y = 5 cos 
Solve the problem.A rectangular sheet of perimeter 30 cm and dimensions x cm by y cm is to be rolled into a cylinder as shown in part (a) of the figure. What values of x and y give the largest volume?
A. x = 12 cm; y = 3 cm B. x = 10 cm; y = 5 cm C. x = 11 cm; y = 4 cm D. x = 9 cm; y = 6 cm