Question

A teacher plans to buy the same number of notebooks and rulers for his classroom. Each notebook costs $2 and each ruler costs $1.

What can be a good numerical expression that represents the total amount of money the teacher will spend on x rulers and x notebooks.

also, write an equivalent expression.

Answer 1

3x=total amount of money, 3x

Explanation:

Because the number of notes books is the same (x and x), you can simply add them.

Basically, the equation is 1x+2x= total cost but you can add 1x and 2x because they have the same variable