What is the exponent of 0.00000072 And how do I solve this?
I know this is a decimal and we have to convert it to an exponent. I want to know how I would solve this and the steps as well so I will be able to solve questions similar to this in the future. Thank you
The number 0.00000072 has no exponent.
My best guess is that this question is about scientific notation. Every non-zero real number can be written in the form $\pm d_0.d_1d_2d_3 \ldots \times 10^e$, where $d_0 \neq 0$. Here $e$ is the exponent. Some examples:

$32 = 3.2 \times 10^1$. The exponent is $1$.
$-0.0014 = -1.4 \times 10^{-3}$. The exponent is $-3$.
$3.14159 = 3.14159 \times 10^0$. The exponent is $0$.

Hopefully now you can solve the question on your own.