Answer:
3
Explanation:
I think the second equation represents the output of the first expression so we have to set it equal to -3 and find what input of the expression results in that output I mentioned previously
So...
-3=-2x+3
-3 -3
-6=-2x
-6/-2=-2/-2x
3=x
I think that is what the second function or equation represents...I´m not fully sure, just did it based on a guess.
Hope this helps!