Question

Each day, Lourdes reads 30 pages of a 450-page book. Write a linear equation to represent the number of pages Lourdes has left to read after x days.

Answer 1

450 - 30x

Explanation:

Lourdes reads 30 pages in one day

Total pages in book = 450

The number of days is x.

Lourdes reads in x days = number of pages read in one day x number of days

= 30 x

Number of pages left after x days = 450 - 30x

Thus, the number of pages left after x days is 450 - 30 x .

Answer 2

They read 30 pages a day, so you need to multiple 30 by the number of days they read, which would be 30x.

You would then need to subtract that total from the total number of pages in the book.

Let Y be the number of pages they have left to read.

The equation would become y = 450 - 30x