R(2)=120 and r(4)=378 divide the difference in the r(x) values by the difference in the x-value

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

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?