Solve.The bar graph shows the median annual income for residents of a selected region of the United States, by level of education. The given polynomial models describe the median annual income for men, M, and for women, W, who have completed x years of education.M = -23x3 + 1170x2 - 13,808x + 72,566W = 8x3 - 56x2 + 511x + 14,763Find a mathematical model for M - W and use it to calculate the difference in the median annual income between men and women with 12 years of education. Does the model underestimate or overestimate the actual difference?
A. $8951; underestimates
B. $7177; underestimates
C. $21,215; overestimates
D. $12,391; overestimates
Answer: A
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Answer the question.Describe the graph of the function f(x) = x + 1 if the domain is 
.
A. The graph consists of the four points (2, 1), (3, 1), (4, 1), and (5, 1). B. The graph consists of the four points (0, 3), (1, 4), (2, 5), and (3, 6). C. The graph is a line through the four points (2, 3), (3, 4), (4, 5), and (5, 6). D. The graph consists of the four points (2, 3), (3, 4), (4, 5), and (5, 6).
Write a fraction to represent the shaded portion of the figure.
A. 
B. 
C. 
D. 
Find the sum.-22 + (-55)
A. 33 B. 77 C. -33 D. -77
A cooperative partnership between firms across the value chain is a horizontal strategic alliance.
Answer the following statement true (T) or false (F)