Advanced Math practice question

Answer: 3

2ˣ⁺⁴ = 16 · 2ˣ, so 16 · 2ˣ − 5 · 2ˣ = 88 gives 11 · 2ˣ = 88, 2ˣ = 8, and x = 3.

Common wrong answers

If you answered 4

The +4 in the exponent becomes the factor 16, not a term to subtract.

If you answered 8

8 is 2ˣ; the exponent is 3.

If you answered 11

11 is the collected coefficient (16 − 5); divide 88 by it first.

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