A teacher 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.

Question

Mathematics

Naomi Pruitt

7 February, 14:03

A teacher 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.

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Answers (1)

Know the Answer?

Mylie Chan · Answer 1

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.