Chapter 2 - Section 2.7 - Combining Functions - 2.7 Exercises - Page 216: 3

"multiply with 2, then add 1 ", "add one, then multiply by 2"

$f\circ g(x)=f[g(x)]$, (apply g first, then f), so the rule for $f\circ g$ is "multiply with 2, then add 1 " The rule for g$\circ$f is "add one, then multiply by 2" (apply f first, then g)