Question

I need help on how to complete the table, thanks.

Answer 1

For question 2:

x=-5 then f(x)=0

x=0 then f(x)-15

x=3 then f(x)-24

x=5 then f(x)=-30

For question 3:

x=-20 then y=2

x=0 then y=-2

x=15 then y=-7

Let me know if you want an explanation