PSAT Math Multiple-Choice Question 781: Answer and Explanation
Question: 781
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 in 2 for x in the expression:
The answer is choice (D).
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