Use the substitution formula to evaluate the integral.
sec2 2x dx
A. 2e
B. - 
C. 
D. e
Answer: C
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Evaluate the integral.
A. 9
i
B. 9
i + 3
j
C. 0
D. 3
i
Solve the problem.Suppose that the number of VCR's manufactured at a factory is given by 
where t is the number of hours that the factory has been in operation. Suppose that the cost, in dollars, of producing n units is given by 
. Find and interpret 
A. (C?N)(t) = 233 + 245t; This function gives the cost as a function of the number of hours that the factory is in operation. B. (C?N)(t) = 233 + 245t; This function gives the cost as a function of the number of of VCR's produced. C. (C?N)(t) = 233 + 245t; This function gives the number of hours that the factory is in operation as a function of cost. D. (C?N)(t) = 1165 - 245t; This function gives the cost as a function of the number of hours that the factory is in operation.
Subtract.90 - (-22)
A. -68 B. 112 C. -112 D. 68
Determine whether the graph of the given equation is symmetric with respect to the x-axis, the y-axis, and/or the origin.x2 + y2 = 9
A. x-axis B. x-axis, y-axis, origin C. y-axis, origin D. Origin