Maybe you should work on starting you're sentences.
Answer:
-5
Step-by-step explanation:
Answer:
x=-5, y=-1
Step-by-step explanation:
Substitute x=-4+y into -2x-5y=15. So we have
-2(-4+y)-5y=15
8-2y-5y=15
-7y=7
y=-1
And x is -4+y so x= -4+(-1)= -5.
1. F(-4)= 2(-4^3) + 2
F(-4)= 2(-64) +2
F(-4)= -128 +2
So F(-4)= -126 is your answer
2. G(-7)= 2(-7)-3
G(-7) = -14 -3
So G(-7)= -17
Hope this helps