Answer:
D
Step-by-step explanation:
a^-b = 1/a^b
Using this formula...
10^-3 = 1/10^3
So this expression is basically saying...
1/1000 or 0.001
The answer is D.
When a number has a negative exponent, it has to be turned into a fraction so that the negative is removed. So it goes from 10^-3 to 1/10^3
