Question

Select all of the true statements.
4 x 10^-6 is 0.02 times as much as 2 x 10^-4
4 x 105 is 80 times as much as 5 x 10^4
6 x 10³ is 150 times as much as 4 x 10^-5
9 x 10^-4 is 0.001 times as much as
9 x 10^-2