Respuesta :

Answer:

B

Step-by-step explanation:

18 = 2 * 3 * 3 = 2 *3²

[tex]18*3^{(n+2)} = 2*3^{2}*3^{n+2}\\\\[/tex]

                [tex]= 2*3^{2+n+2}\\\\= 2*3^{n+4}\\\\= 2(3)^{n+4}[/tex]

Hint:

[tex]a^{m}*a^{n} = a^{m+n}[/tex]