Final answer:
The fraction 9/2 is equal to 4.5 as a decimal. When rounded to the nearest hundredth, it becomes 4.50. Therefore, the answer is 4.50, which is option (a).
Step-by-step explanation:
To convert the fraction 9/2 to a decimal, divide 9 by 2. The result of the division is 4.5.
To round this to the nearest hundredth, we consider the digit in the thousandths place, which in this case is not present, implying a zero.
Since zero is less than 5, we do not need to round up.
Therefore, 4.50 is 9/2 rounded to the nearest hundredth.
The correct answer from the given options is (a) 4.50.