Respuesta :

mysticchacha

Answer:

formula:  a_n = 5^(n-1)

Step-by-step explanation:

Common ratio =  r =  25/5 = 5

a_1 = 1

a_n =  a_1 * r^(n - 1)

a_n = 1* 5^(n - 1)

slockettsaj

B. 5^n-1   is the answer.

EG. 2020