body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

Practice Test

Continue to next subchapter

Exercise 3 Page 86

To find the area of a rectangle, multiply the length by the width.

B

Let's find the areas of of the rooms.

To find the area of a rectangle, we multiply the length by the width. A_1&= (x+3)x A_2& = (x+5)(x-2) We want to find the total area to be carpeted. We need to add A_1 and A_2.

A_1+A_2

SubstituteExpressions

Substitute expressions

(x+3)x + (x+5)(x-2)

▼

Simplify

Distribute x

x^2+3x + (x+5)(x-2)

Multiply parentheses

x^2+3x + x^2-2x+5x-10

Add and subtract terms

2x^2+6x-10

Therefore, the answer is B.

Subchapter links

Exercises