Final answer:
Marshawn's batting average as a fraction in simplest form is 9/12.
Step-by-step explanation:
To write Marshawn's batting average as a fraction in simplest form, we need to convert the decimal to a fraction. A decimal is a part of a whole, so the numerator of the fraction is the decimal value and the denominator is a power of 10 that corresponds to the number of decimal places. In this case, Marshawn's batting average is 0.72, which is 72 hundredths. So the fraction is 72/100. To simplify this fraction, we divide both the numerator and denominator by their greatest common factor, which is 8. Therefore, Marshawn's batting average as a fraction in simplest form is 9/12.