I made a mistake when I typed this out last time, here is the correct one:

Question

Create a table for different values of x as the best solution to the equation 2^x = 1000, with decimal precision.

Answer 1

I know one kilobyte = 1024, that is
2^10 = 1024
and
2^9 = 512
Table:
x ... 2^x
10, 1024
9, 512
9.8, 891.44
9.9, 955.4
9.95, 989.118
9.97, 1002.9 , a bit too high, so between 9.95 and 9.97
9.96, 995.998 , a bit too high so between 9.97 and 9.96
9.965, ... keep working on it until you think you have it accurate enough

Answer 2

Thanks Reiny!