On his twelfth birthday ben was 4 3/4 feet tall. on his thirteenth birthday ben was 5 and 3/8 feet tall. how much did ben grow between his twelfth and thirteen birthdays? plz answer quick

The answer is -pie over 2

This is what i found “an explicit formula designates the nth term of the sequence, as an expression of n (where n = the term's location). it defines the sequence as a formula in terms of n. this example is an arithmetic sequence(the same number, 5, is added to each term to get to the next term).” i hope this you for what your looking for. can you plz mark me brainliest?