# Rachel needs to write 3 book reports with b pages and 3 science reports with s pages during the school year. How do you write an algebraic expression for the total number of pages Rachel will need to write?

##### 1 Answer

Nov 30, 2017

#### Explanation:

We have

Now looking at the number of science reports, we have 3 lots of s pages, so it is

Working out the total number of pages we add the number of book reports and the number of science reports, so we end up with

Hope this helps!