SAT Math Multiple Choice Practice Question 405: Answer and Explanation

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Question: 405

9. If = 22, then x =

A. 1
B. 2
C. 4
D. 8
E. 16

Correct Answer: E

Explanation:

E Approach the problem in bite-sized pieces. = 23, so = 4. Square both sides to get x = 16.

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