+0  
 
+1
100
2
avatar+193 

If $\&x$ is defined as $\&x = x + 5$ and $\#x$ is defined as  $\#x = x^2$, what is the value of $\#(\&4)$?

 Feb 14, 2021
 #1
avatar+98 
+6

Clearly, &4=9. Then, #9=81. Sp #(&4)=81.

 

:)

 Feb 14, 2021
 #2
avatar+2184 
0

To explain:

We first calculate &4, and then we mo ve on and calculate the # of the output of &4.

In other words this is #(4+5) which is #9 which is 81.

 Feb 14, 2021
edited by CalTheGreat  Feb 14, 2021

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