In a certain year the amount A of garbage in pounds produced after t days by an average person is given by A=3.5t.

(a) Graph the equation for t>0.

(b)How many days did it take for the average person to produce 150 pounds of garbage?

Solution:

(a)

Draw a straight line passing through (0,0) and (2,7)

(b)

3.5t = 150

t = 33 days

So it takes 33 days for the average person to produce 150 pounds of garbage