Question

Tanya is printing a report. There are 100 sheets of paper in the printer, and the number of sheets p left after t minutes of printing is given by the function p(t) = -8t+100.

How long would it take the printer to use all 100 sheets of paper? Explain.

Answer 1

12.5 minutes.

Explanation:

The number -8 indicates that the paper uses 8 pages per minute. You can solve the equation by simply dividing 100/8.

You can also find the answer by solving the equation for the value t. Subtract 100 from both sides, and you will get -8t = -100. Then, divide both sides by -8 and you will get 12.5.