Topic 4.2

The cost of 5 books and 10 pencils is $36. The cost of 2 books and 40 pencils is $18. How much do books cost and how much do pencils cost?

You're solving a system of linear equations using substitution. Once you find the fist answer, you're done.

You're solving a system of linear equations using substitution. This means that you graph each line and use the point of intersection as your solution.