Evaluate the integral.
A. 
?
B. 
?
C. 4?
D. 8?
Answer: D
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Solve.Find the volume of the torus generated by revolving the circle (x - 2)2 + y2 = 1 about the y-axis.
A. 8?2 B. 6?2 C. 4?2 D. 2?2
Solve the problem.Find the number of units that must be produced and sold in order to yield the maximum profit, given the following equations for revenue and cost:R(x) = 70x - 0.5x2C(x) = 2x + 9.
A. 72 units B. 68 units C. 69 units D. 77 units
Write in if-then form.x = 8 only if 2x + 3 = 19.
A. If x ? 8, then 2x + 3 = 19. B. If x = 8, then 2x + 3 = 19. C. If 2x + 3 ? 19, then x = 8. D. If 2x + 3 = 19, then x = 8.
Use your graphing calculator to graph the given function. Then provide an appropriate response.Graph f(x) = log5 x. Determine x when f(x) = 2.75. Round to the nearest tenth if necessary.
A. 27.1 B. 83.6 C. 77.1 D. 55.9