# The distance a marathon runner covers can be modeled by the function d(x)=153.8x+86. d represents distance (m) and x represents time (min). ow long will it take the runner to run the 42,2km race?

##### 2 Answers

Jun 21, 2018

The answer is the solution of

The equation can be solved as follows.

Subtract both sides by

Divide both sides by

As

Jun 21, 2018

#### Explanation: