The numbers y (in millions) of drug prescriptions filled by mail order in the United States from 1995 through 2008 can be modeled by
y = 13.0t + 20, 5 ≤ t ≤ 18,
where t is the year, with t = 5 corresponding to 1995.†
(a) According to the model, when did the number of prescriptions filled by mail order reach 100 million? (Enter your answer as the calendar year in which this occurred.)

(b) What is the slope of the model?
million prescriptions per year

What does it tell you about the number of prescriptions filled by mail order in the United States?
The number of drug prescription fi

Question

The numbers y (in millions) of drug prescriptions filled by mail order in the United States from 1995 through 2008 can be modeled by
y = 13.0t + 20, 5 ≤ t ≤ 18,
where t is the year, with t = 5 corresponding to 1995.†
(a) According to the model, when did the number of prescriptions filled by mail order reach 100 million? (Enter your answer as the calendar year in which this occurred.)


(b) What is the slope of the model?
million prescriptions per year

What does it tell you about the number of prescriptions filled by mail order in the United States?
The number of drug prescription fi