If the poster is 6 by 18, and it increases by a factor 7/2, then you multiply both the height and length by 7/2:

Therefore, the new height is 21, and the new length is 63.
11.025 pounds hope this helped
Answer:
W = 9
L = 15
Step-by-step explanation:
I don't know how I got the answer, I just grabbed a calculator and started punching in numbers till I got what I was looking for.
Take away m from both sides to get 15=2m-9 and add 9 to get 24=2m, next divide by 2 to get m=12
That would be $19.
let me know if you have any further questions
:)