Answer:
n=1
Step-by-step explanation:
5^ (n-3) = 1/25
We can rewrite 1/25
1/25 = 1/5^2 = 5^-2
5^ (n-3) = 5^-2
Since the bases are the same, the exponents have to be the same
n-3 = -2
Add 3 to each side
n-3+3 = -2+3
n =1
