[tex]\huge\boxed{3.7\ \times\ 10^{-2}}[/tex]
First, you need to find where you can move the decimal point to so that there is only one non-zero digit to the left of it.
Move the decimal point, and that is the first part done.
Add "[tex]\times\ 10[/tex]".
For the last part - the power, you need to find how many decimal places you moved the decimal point. In this case, we moved it to the right 2 places, so the power is [tex]^{-2}[/tex].
If, for example, we had moved the decimal point three places to the left, the power would be [tex]^{3}[/tex].