Respuesta :

gmany

Answer:

D.  9

Step-by-step explanation:

[tex]3^{x-2}=3^7\iff x-2=7\qquad\text{add 2 to both sides}\\\\x-2+2=7+2\\\\x=9[/tex]

Answer:

x=9

Step-by-step explanation:

i took the test