The integer half way between negative 20 and 6

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.

Acredit union pays 5% annual interest, compounded daily, on savings deposits. find the value after one year of $500 deposited in this account. $525.64 $25.64 $20.40 $520.40