SAT Math Practice Question #24280 - SATify | SATify

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SAT Math Practice Question #24280 - SATify | SATify

#24280

algebra

exponents

medium

120 sec

Real numbers $m$ and $n$ satisfy the equations $3^{m} = 2 7^{n + 1}$ and $4^{n} = 2^{m - 4}$ . What is $mn$ ?

A.

-6

B.

3

C.

6

D.

9

E.

12