### Home > AC > Chapter 6 > Lesson 6.1.1 > Problem6-8

6-8.

Write expressions to represent the quantities described below.

1. If Thompson Valley High School has $x$ students and if Erwin Middle School has $342$ fewer students, how many students does Erwin Middle School have?

2. If w represents the width of a rectangle and if its length is twice its width, how long is the rectangle?

3. When Mr. Van Exel bought his laptop, he paid $\400$ more than three times the amount he paid for his camera. If he paid c dollars for his camera, then how much did he pay for his laptop?

$x−342$

Follow the steps in part (a).

length $=2w$

Identify the important information in the word problem.

Follow the steps in part (a).

cost of the laptop $=3(c)+400$