Question

(fxg) (gxf) f=(1/2x -7) g=x+6

Answer 1

Do you mean (f o g) and (g o f) ?

Answer 2

yes

Answer 3

yes

Answer 4

so then (fog) becomes f(g(x)).
Can you plug in the function g=x+6 wherever you find x in f(x)?

Answer 5

(fog) means to substitute the x-values in f(x) for the function g(x)
(gof) means to substitute the x-values in g(x) for the function f(x)