Step-by-step explanation:
[tex]h(n) = 2n + 3 \\ substituting \: h(n) =17 \\ \therefore \: 17 = 2n + 3 \\ \therefore \: 2n = 17 - 3 \\ \\ \therefore \: 2n = 14 \\ \therefore \: n = \frac{14}{2} \\ \: \: \: \huge \red{ \boxed{\therefore \: n = 7}}[/tex]