We have the following relation given:
V(w) = 7-w
And we want to find the following table:
w V(w)
________________
-4 11
-10 17
5 2
________________
We can start with w=-4 and we got:
V(-4)= 7-(-4)= 11
Now we can go with the second row and we got V(w)=17
17=7-w
And solving w=7-17=-10
And for the last line w=5 we got:
V(5)=7-5=2