(1/10)^x=100 (1/10)^x =1000

Question

(1/10)^x=100
(1/10)^x =1000

Answer 1

(1/10)^x=100
(10^(-1))^x=10²
10^(-x)=10²
-x=2
x=-2

(1/10)^x=1000
10^(-x)=10³
x=-3