Chapter ISG, Problem 1.7.2.7P

To determine

To write a function for the given equation

Answer to Problem 1.7.2.7P

The function is $f(x)=\frac{x}{60}$

Explanation of Solution

Given information:

The total distance is 60 miles.

The relationship between distance, speed and time is,

  $d=\frac{r}{t}$

Calculation:

The distance is 60 miles.

Let, the average rate of speed be “x”

Time will be,

  $t=\frac{r}{d}$

Substituting the values,

  $f(x)=\frac{x}{60}$

Hence, the function is $f(x)=\frac{x}{60}$ .