23-02-2022
SAT

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If 3^x-2 = 81, what is the value of 2^2x-7?

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23-02-2022

Answer:

32

Explanation:

3^(x-2) = 81 = 3^4

so x - 2 = 4

x = 6

2^(2x-7) = 2^(2*6-7) = 2^5 = 32

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