Answer:
-3.5
Step-by-step explanation:
25^(x+3)=1/5
5^2(x+3)=5^-1
now we equate powers.
2(x+3)=-1
2x+6=-1
2x=-7
x=-3.5
25^ x = 1 / 5
25x = 5 -1
5 2x = 5 -1
2x = -1
x = -1 / 2
O R
x = - 0 . 5
I tried my best... I might be wrong