Find the integral.
dx
A. - 
x3 - 4x2 + C
B. 
x3 + C
C. 
x2 + 4x + C
D. 
x3 - 4x2 + C
Answer: D
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Solve the problem.Consider a population that grows according to a linear growth model. The population in the fifth generation is P5 = 43 and the population in the ninth generation is P9 = 71. The common difference is d =
A. 4. B. 14. C. 7. D. 28. E. none of these
Solve the problem.The cost for labor associated with fixing a washing machine is computed as follows: There is a fixed charge of $20 for the repairman to come to the house, to which a charge of $29 per hour is added. Find an equation that can be used to determine the labor cost, C(x), of a repair that takes x hours.
A. C(x) = ( 20 + 29) x B. C(x) = 20 - 29x C. C(x) = 29 + 20x D. C(x) = 20 + 29x
Solve the problem.The voltage E in an electrical circuit is given by E = 1.7 cos 50?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).
A. 
B. 
C. 25
D. 50
Find the indicated intercept(s) of the graph of the function.x-intercepts of f(x) = 
A. (8, 0)
B. (-3, 0)
C. (
, 0), (-
, 0)
D. none