You're solving a system of linear equations using substitution. Once you find the fist answer, you're done.
Question 5
5.
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.
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?
Books cost $7
Books cost $5
Books cost $6
Books cost $10
Pencils cost $.10
Pencils cost $.20
Pencils cost $.30
Pencils cost $1
I don't buy pencils, which is why I'm never prepared for class.