On his last deep sea fishing trip, Greg caught a grouper that measured 20.716 inches in length. Rules require that grouper less than 22 inches in length be released back into the wild.

How much longer, in inches, did Greg's fish need to be for him to keep it?

1.284

He's allowed to keep it is the fish is exactly 22 inches so you need to find the difference between 22 and the actual length of the fish (i.e. subtract how long the fish is from 22)

The answer is 1.284. Believe the answer because my teacher gave me home work and I got the answer correct. :)

To find out how much longer Greg's fish needed to be for him to keep it, we need to subtract the length of his fish from the minimum length required.

The minimum length required is 22 inches.

So, we can calculate the difference as follows:

22 inches - 20.716 inches = 1.284 inches

Therefore, Greg's fish needed to be 1.284 inches longer for him to keep it.