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If $f(x)=\frac{16}{5+3x}$, what is the value of $\left[f^{-1}(2)\right]^{-2}$?

 May 3, 2021
 #1
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The answer is 4/9.

 May 3, 2021
 #2
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The answer was 1. 

 May 4, 2021

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