Question

Ray is reading a book of 150 pages at a constant rate of 25 pages per hour. Let’s consider the following function: the pages left to read L as a function of time passed since the beginning of the reading T. What is the domain and range?

Answer 1

The formula of the given problem in function form is

`L(t) = 150 - 25t` where, t represents the hour

Explanation:

Given,

Ray reads the at a constant rate of 25 pages per hour.

To find, the function L: the pages left to read

Let, t be the hours

So, in t hours he read 25T pages

After T hours he was left with
`(150 - 25t)` pages to read.

Formula

Hence, the required function will be

`L(t) = 150 - 25t` where, t represents the hour