For y (x) = 4x+1 and g (x) = x-5, find (fºg) (4).

Answer: - 3

step-by-step:

okay so first you gotta plug g (x) into f (x) by replacing all the x's with x-5

4 (x-5) + 1

then you distribute the 4 by multiplying it by x and - 5

4x-20+1

then you add together like terms (-20 and 1)

4x-19

then you plug in 4 for x

4 (4) - 19

4*4 is sixteen so

16-19

then you subtract 19 and get - 3