Question

If x = 5, what is the value of 4x2 - 7? A. 107 B. 395 C. 93 D. 128

Answer 1

Answer: C

Explanation:

4 ×5 to the power 2 is 100

100-7=93

Answer 2

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Plug in 5 to x:

4(5)² - 7

Solve:

4(5)² - 7

Square the 5 first.

4(25) - 7

100 - 7

93

Your answer would be C). 93

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