13
QuizMultiple Choice

Solving Quadratic Equations: Completing the Square — Unit test

Question 13 • Common Core Algebra I 2014 - MA3109 B-CR

Liliana decides to crop a square photo 2 inches on each side to fit it into a frame. The area of the original photo was 121 square inches. In the equation (x + 2)2 = 121, x represents the side measure of the cropped photo.

Answer
A
8 inches by 8 inches
B
9 inches by 9 inches
C
12 inches by 12 inches
D
13 inches by 13 inches

Explanation

The original square photo has side length √121 = 11 inches. Since it is cropped by 2 inches on each side, the equation gives x + 2 = 11, so x = 9 inches. The cropped photo is 9 inches by 9 inches, which is choice B.

AI-written and checked against the verified answer.

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