Integrate the function.
A. 
B. 2tan-1 2
C. 2tan-1 
D. 2sin-1 2
Answer: B
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The graph of the logarithm is ?
A. Decreasing and concave down. B. Decreasing and concave up. C. Increasing and concave up. D. Increasing and concave down.
Find the surface area of the surface S.S is the portion of the surface 4x + 3z = 2 that lies above the rectangle 4 ? x ? 8 and 
in the x-y plane
A. 
B. 45
C. 
D. 40
Supply the missing numbers. Round decimals to the nearest thousandth and percents to the nearest tenth of a percent.fractiondecimalpercent?225%
A.
2 ? | 22.5 |
B.
| 2? | 22.5 |
C.
| 2? | 2.25 |
D.
2 ? | 2.25 |
Solve the problem.The revenue received from the sale of electric heaters is seasonal, with maximum revenue in the winter. Let the revenue received from the sale of heaters be approximated by R(x) = 40 cos 2?x + 600, where x is time in years, measured from January 1. Find R'(x) for March 1st.
A. -40?
B. 0
C. -40?
D. -40?