Solve the problem.For a school project, Sue interviewed a total of 100 persons who were either lawyers or salesmen. She asked them if they were happy or unhappy with their occupation. Of the 64 lawyers interviewed, 11 were unhappy, however, only 4 of the salesmen were unhappy. Suppose that one of the persons interviewed is selected at random. Find the probability that the person selected is happy.
A. 0.82
B. 0.85
C. 0.92
D. 0.88
Answer: B
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Tell whether the graphs of the following pair of equations are parallel, perpendicular, or neither.
?
?
A. neither B. parallel C. perpendicular
Provide an appropriate response.If f(x) is a differentiable function and f' (c) = 0 at an interior point c of f's domain, and if 
for all x in the domain, must f have a local minimum at x = c? Explain.
What will be an ideal response?
Provide an appropriate response.The total cost of an asset is:
A. original cost minus salvage value B. original cost plus salvage value C. original cost plus shipping and installation charges D. original cost plus shipping and installation charges minus salvage value
Solve.Find the volume of a sphere with radius 7 inches. Use 
for 
A. 77 cu in.
B. 154 cu in.
C. 1437
cu in.
D. 4312 cu in.