Please help! I don't understand how to solve this! Will give brainliest!

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

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.