Answer:
13
Step-by-step explanation:
Put the 2 in place of the f then the 3 in place of g. You would get a problem that looks like 2(-1) + 3(5). Multiply 2(-1)= -2 and multiply 3(5)=15. Your equation now looks like -2 + 15. Just add the two to get 13.
-2 + 15= 13
