Advanced Math practice question

Answer: 3

Set y = 0: 2^x = 8 = 2³, so x = 3.

Common wrong answers

If you answered 4

4 comes from 2^x = 16 or 2 × 4 = 8, confusing multiplication with a power.

If you answered 8

8 is the value 2^x must equal, not x.

If you answered -7

−7 is the y-intercept (2⁰ − 8), not the x-intercept.

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