common ratio = a4/a3 = a3/a2
8/a3 = a3/18
(a3)^2 = 8 * 18
(a3)^2 = 144
a3 = 12 or a3 = -12
common ratio = 8/12 or common ratio = 8/(-12)
common ratio = 2/3 or common ratio = -2/3
Answer: 12 or -12
It's the second one which is B becasue, first you minus 3w on both sides of your equal side. Then you will have 3L=18-3w. Next you will have to divided by 3 on both sides of the equal sign, you will have L=18-3w/3. Afte that you will simipfy and get your answer, which is B. Please get a brainiest point.
40??? i’m not sure the wording is kinda confusing