Function k(x) = x+18

Find k(0)
k(x) = 6x
k(-2)

k(5)
k(-2)
indicated outputs
2
F(x) = 4x - 5x
I need help with these can anyone help?

You just plug in the numbers. I'll do the first one for you k(x)=x+18, k(0)= 0+18=18