Find the domain and range

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

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

What is the result of converting 60 ounces to pounds remember there are 16 ounces in a pound