PSAT Math Grid-Ins Question 4: Answer and Explanation
Question: 4
If 5x2 = 125, what could be the value of 5x3?
Correct Answer: 625
Explanation:
625
The question asks for the value of 5x3. Use the given equation 5x2 = 125 to find the value of x. Divide both sides of the equation by 5 to get x2 = 25. Take the square root of both sides to get x = 5. Plug x = 5 into 5x3 to get 5(53). This equals 5(125) or 625. The correct answer is 625.
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