Using data from 1920 and projected to 2030, the percent P of men 65 years of age or older in the labor force can be modeled by
P = 0.000078x3 - 0.0107x2 - 0.182x + 64.68
where x is the number of years past 1900.
(a) What x-min and x-max should you use to view this graph for values representing 1900 to 2030?
(b) If P-min = 0, use a table to determine a value for P-max that would show a complete graph of the model.
(c) Graph this equation.
(d) Write a sentence that describes the percent of men 65 years of age or older in the workforce.