Answer: -3 for the exponent box
Step-by-step explanation: Hi there! Let's get started.
We know that a negative exponent is going to decrease by a power of 10 every time for example 10 x 10^-1 = 1 because the -1 says we need to move the decimal point one to the left.
So with this we take 2.345 x 10^-3 = 0.002345.
We moved the decimal point 3 to the left from 2.345 to get 0.002345.
Hope this helps! :)