Solve.A census was taken to determine 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. Shown in a rectangular coordinate system are the graphs of the polynomial models. Identify the median annual income for a man with 20 years of education as a point on the appropriate graph.M = 224x2 - 1266x + 20,106W = 287x2 - 4030x + 33,761
A. (20, 84,386)
B. (20, 67,961)
C. (20, 144,531)
D. (20, 108,440)
Answer: A
Mathematics
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Simplify.i5
A. i B. 1 C. -i D. -1
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Find the average value of the function over the region.f(?, ?, ?) = ? cos ? over the solid lower ball ? ? 18, ?/2 ? ? ? ?
A. - 26,244?
B. 
C. 
D. - 
Mathematics
Over a certain time period the price of gold doubled every 4 years. What was the yearly growth factor for gold during this period? Round your answer to two decimal places. ?
A. 2.00 B. 1.19 C. 1.69 D. None of the above
Mathematics
Evaluate the integral.
dx
A. 
sin-1 x - 
sin-1 x + 
x
+ C
B. 
sin-1 x - 
cos-1 x + 
+ C
C. 
sin-1 x - 
x sin-1 x - 
+ C
D. 
sin-1 x + 
sin-1 x - 
x
+ C
Mathematics