1. Move the decimal point:

* Move the decimal point to the right until you have a number between 1 and 10. In this case, you'll move it three places to the right: 0.0075 becomes 7.5

2. Count the decimal places:

* You moved the decimal point three places to the right.

3. Write the number in scientific notation:

* The number becomes 7.5 x 10^-3

Explanation:

* 7.5 is the number between 1 and 10.

* 10^-3 represents the movement of the decimal point. The negative exponent indicates that the decimal was moved to the right.

Therefore, 0.0075 in scientific notation is 7.5 x 10^-3