Solve the equation.-5(x + 4) = -(5x + 20)
A. {4}
B. {0}
C. {all real numbers}
D. ?
Answer: C
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Graph the two functions on one coordinate plane.f(x) = x3g(x) = x3 + 3
A. 
B. 
C. 
D. 
Evaluate.Find 
(-5) when f(x) = 2x - 1 and g(x) = 2x2 + 14x + 2.
A. - 
B. 
C. 0
D. 
Solve the problem.John (whose line of sight is 6 ft above horizontal) is trying to estimate the height of a tall oak tree. He first measures the angle of elevation from where he is looking as 35°. He walks 30 feet closer to the tree and finds that the angle of elevation has increased by 12°. Estimate the height of the tree rounded to the nearest whole number.
A. 86 ft B. 90 ft C. 67 ft D. 61 ft
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