What is the answer to this question?

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

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w