Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(1) = 3, u '(1) = -7, v(1) = 6, v '(1) = -2.
(uv) at x = 1
A. 48
B. 36
C. -48
D. -33
Answer: C
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Solve the problem.The number of quarters needed to double an investment when a lump sum is invested at 10%, compounded quarterly, is given by n = log1.025 2. In how many years will the investment double, to the nearest tenth of a year?
A. 28.1 years B. 7.0 years C. 3.5 years D. 14.0 years
Use a calculator and the change-of-base formula to find the logarithm to four decimal places.log34 94.54
A. 0.7752 B. 2.7806 C. 1.9756 D. 1.2900
Solve the problem.The following table shows the number of dog collars, in thousands, produced by Allied Pet Products in the 3 years considered. 
Fit a quadratic function f(x) = ax2 + bx + c to the data. What is the value of b?
A. -1.2 B. -1.6 C. 2.3 D. 1.9
Subtract.23 - (-19)
A. -42 B. -4 C. 42 D. 4