For which pairs of functions is (fog)(x) = x? 1
Х
2
Х
O f(x) = x2 and g(x)=
=
O Rx- and g(x)=
O fx)-*72 and g(x) – 2-3x
O Rx) = 2x-2 and o(x) = 3x+2

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?