Ateacher plans to buy the same number of notebooks and rulers for his classroom. each notebook costs $5. each ruler costs $2. write an expression that represents the total amount of money the teacher will spend on x notebooks and x rulers.

5x+2x

Step-by-step explanation

Considering you will buy the same amount of rulers and notebooks, x will represent the same number.

Since you will buy an x number of notebooks that cost $5, 5x, and an x number of rulers that cost $2, 2x, you can combine them to make 5x+2x.

Use

To use the expression you can fill in any number for x.

Imagine you have 30 students, you could replace each x in the expression with 30. This would give you 5(30) + 2(30).

Multiplying each would give you 150 + 60 which results in $210.

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