Ccording to data from the U. S. Census Bureau, the total number of people in the United States labor force can be approximated by the function T(x) = -0.011x2 + 2x + 107,
where x is the number of years since 1980 and T(x) is the number of workers in millions.
The number of women in the United States labor force can be approximated by the
function W(x) = -0.012x2 + 1.26x + 45.5.
a. Write a polynomial function M(x) that models the number of men in the labor force.

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

Polygon mnopq is dilated by a scale factor of 0.8 with the origin as the center of dilation, resulting in the image m′n′o′p′q′. the coordinates of point m are (2, 4), and the coordinates of point n are (3, 5). the slope of is .

What are “like terms”? why can we only add like terms?