Which are shown on the diagram ? check all that apply

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

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate. in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14