SAT Math Multiple Choice Practice Question 470: Answer and Explanation
Next steps
- Use your browser's back button to return to your test results.
- Do another SAT math multiple choice practice tests.
Question: 470
11. If 
, what is the value of x ?
A. 4
B. 16
C. 16
D. 32
E. 64
Correct Answer: D
Explanation:
D Multiply both sides by 2 to get 
. Square both sides to get x = 162. Therefore, x = 32. You could also have plugged in the answer choices. For D, put 32 in for x and ask, does 
? Then does 
? Square both sides to find that it does, so D is correct.