Solve the problem.Find the length of the curve x = 
- 4 ln 
, 8 ? y ? 16.
A. 6 + 4 ln 
B. 6 + 4 ln 2
C. 8 + 4 ln 2
D. 8 + 4 ln 
Answer: B
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Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(-6 - 8i)(-6 + 8i)
A. 100 B. 36 + 64i2 C. -28 D. 36 - 64i2
Find the slope of the line through the pair of points.(3, -2) and (-7, -4)
A. 5
B. - 5
C. - 
D. 
Use a graphing calculator to solve the nonlinear system. Give x- and y-coordinates to the nearest hundredth.y = log(x + 8)y = x2
A. {(-1.38, -1.89), (1.50, -2.25)} B. {(-0.92, 0.85), (0.98, 0.95)} C. {(-0.92, -0.85), (0.98, -0.95)} D. {(-1.38, 1.89), (1.50, 2.25)}
Solve the problem.If an investment of P dollars grows to A dollars in two years, the annual rate of return on the investment is given by 
Jared Spencer bought a collector's coin set for $770 and sold it two years later for $1192. What was the approximate annual rate of return of his investment? Round to the nearest tenth of a percent.
A. 19.4% B. 24.4% C. 27.4% D. 7.4%