Here's how to get there:

1. Move the decimal point to the right until you have a number between 1 and 10. In this case, we move the decimal point 8 places to the right: 3.05

2. Count the number of places you moved the decimal point. This number becomes the exponent of 10. Since we moved the decimal point 8 places to the right, the exponent is -8.

3. Write the number in scientific notation: 3.05 x 10⁻⁸