i'm not sure how to do this

Answer:
Step-by-step explanation:
soooo they want to know what the number of the function is at the number given in the f(x) and g(x)....
which for f(-8) is -5
and g(4) is 3
I'm getting the numbers from the graph
sooo plug the numbers into the expression given
-1 * f(-8) - 4* g(4)
= -1*-5 - 4 * 3
= 5 -12
= -7
Hope that helps :)