5 times a number increased by 2 is the same as 8 more than 3 times the number. Find the number

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

Witch represents the inverse of the function f(x)=1/4x-12

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap