Digital PSAT Math Practice Question 223: Answer and Explanation
Question: 223
If 
, then 
equals which of the following?
- A.
- B.
- C.
- D.
Correct Answer: D
Explanation:
(D) First, solve for x by cross-multiplying:
2x = 4. Dividing by 2 tells you that x = 2. Next, plug 2 in for x in the expression:
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