Question

Shryia read a 480-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 402 pages left to read.

Let P represent the number of pages left to read after t hours.

Complete the equation for the relationship between the number of pages left and number of hours.

Answer 1

Explanation:

Answer 2

The required equation is
`P(t) = -52t + 480`

Explanation:

Consider the provided information.

Let P represent the number of pages left to read after t hours.

Shryia read a 480-page-long book cover to cover in a single session, at a constant rate. After reading for 1.5 hours, she had 402 pages left to read.

Total number of page Shryia read in 1.5 hours is:

480-402 = 78

It is given that the rate is constant i.e 1.5 hours,

Therefore, she read 78 pages in 1.5 hours.

She can read
`(78)/(1.5) = 52` page per hour

The required equation is:

`P(t) = -52t + 480`

Where t represents the number of hours.