Final answer:
The decimal form of 3/12 is 0.25, a terminating decimal. The decimal form of 2/9 is 0.2222..., a repeating decimal.
Step-by-step explanation:
The decimal form of 3/12 is 0.25. This is a terminating decimal because it ends after a finite number of digits. The decimal form of 2/9 is 0.2222.... This is a repeating decimal because the digit 2 repeats indefinitely.
Learn more about Classifying decimal forms of fractions