Answer:
7.2×10−5 the -5 is the exponent
Explanation:
You have to move the decimal where there is no zeros when ever you move the decimal to the right is a positive and when ever you move the decimal to the left is a negative exponent for example: 0.0000568 is
5.68 × 10-5 the -5 is the exponent. The positive is 450000= 4.5×10 5 the 5 is the exponent