Answer:
1.49598 x 10^8 kilometers.
Explanation:
There are quite a few rules for scientific notation.
First, the number in front of the decimal cannot be larger than 9.
Second, the base should always be 10.
Furthermore, the exponent tells you how many places to move the exponent. If the exponent is negative, move the decimal to the left. If the exponent is positive, move the decimal to the right.
Lastly, the exponent may be positive or negative.
There are more rules, of course, but these should mostly help you.