Answer:
Therefore, we conclude that the Jeff must grow 4 inches in order to ride the roller-coaster.
Explanation:
We know that: in order to ride a roller coaster,a rider must be greater than 49 inches tall.Jeff is 45 inches tall.
We have the next inequalitythats:

Therefore, we conclude that the Jeff must grow 4 inches in order to ride the roller-coaster.