Using U.S. Bureau of Labor Statistics data for selected years from 1950 and projected to 2050, the number of men in the U.S. workforce (in millions) can be approximated by

M = 0.59x + 43.2

where x equals the number of years past 1950.

(a) Use a graphing calculator to graph this equation with the window x-min = 0, x-max = 100, y-min = 0, y-max = 100.

(b) The point (80, 90.4) lies on the graph of this equation. Explain its meaning.

(c) Find the projected number of men in the U.S. workforce in 2050 according to this model.