In a study conducted by a certain country's Economic Development Board, it was found that the Lorentz curve for the distribution of income of college teachers was described by the function
?
?
and that of lawyers by the function
?
?
Compute the coefficient of inequality for each Lorentz curve. Round your answer to four decimal places.
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Which profession has a more equitable income distribution?
?
A. 
B. ?
C. ?
D. ?
Answer: D
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A function of x is depicted in the graph. Find any input values that produce the indicated output.f(x) = -4
A. {x| -4 < x < -3} B. {x| -4 < x ? -3} C. {x| -4 ? x ? -3} D. -3
Factor the polynomial completely.49x2 + 42x + 9
A. (49x + 1)(x + 9) B. (7x + 3)2 C. (7x - 3)2 D. (7x + 3)(7x - 3)
Simplify the expression.
-2
A. 
B. 
C. 
D. 
Solve the problem.The average daily temperature T of a city in the United States is approximated by T = 55 - 23 cos 
(t -30)where t is in days, 1 ? t ? 365, and t = 1 corresponds to January 1. Find the period of T.
Fill in the blank(s) with the appropriate word(s).