### Home > CAAC > Chapter 6 > Lesson 6.1.1 > Problem 6-8

6-8.

Write expressions to represent the quantities described below. Homework Help ✎

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?If

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

Identify the important information in the word problem.

Follow the steps in part (a).

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