Use the shell method to find the volume of the solid generated by revolving the region bounded by the given curves and lines about the y-axis.y = x2, y = 4 + 3x, for x ? 0
A. 192?
B. 96?
C. 64?
D. 32?
Answer: C
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Solve the problem.Suppose there are two low-frequency sound waves with similar frequencies. Let 
and 
model the two tones where t is time measured in seconds. Write the sum 
as a product of two trigonometric functions, and determine the frequency of the beats.
A. no beats 0.006 cos (83?t) cos (83?t) B. no beats 0.006 cos (41.5?t) cos (41.5?t) C. 1.5 beats per second 0.006 cos (41.5?t) cos(1.5?t) D. 3 beats per second 0.006 cos (83?t) cos (3?t)
Find the quotient.
÷ 
A. 
B. 
C. 
D. -1
Solve the equation. Round to the nearest hundredth, if necessary.2(k - 4.8) = -0.7(k - 3.7)
A. k = 9.38 B. k = -5.39 C. k = 5.39 D. k = 4.51
Find the maximum y-value on the graph of y = f(x).f(x) = -x2 + 2x + 1
A. 1 B. -2 C. 2 D. -1