+0  
 
0
72
5
avatar+52 

wut is this brut

 May 1, 2023
 #1
avatar+149 
0
The inverse of a function is a function that undoes another function. for example the inverse of f(x) = x-3 is f^-1(x) = x+3.
 May 1, 2023
 #2
avatar
0

g^{-1}(-7) = 30.

 May 1, 2023
 #3
avatar+118616 
+2

This question has been asked many tims recently. 
One of the others has proper answers.

 May 2, 2023
 #4
avatar+214 
0

Try to find what will produce -7 to get the answer to the question. If you think that x is smaller than -3, try various values of x. Will it work? Then try 21+x. This will be too high for any x in the given range. Then try the last equation. Once you have found what value of x will produce -7 for each equation, find which one is in the given range.

 May 3, 2023
 #5
avatar+52 
0

turns out the answer is 81

 May 3, 2023

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