Write an expression for the height and width of the large rectangle in terms of the height
The width of each poster is 8.5 inches more than half its height. Brian arranges the posters side by side in two rows of three.
The posters are h high and (0.5h + 8.5) wide.
Using uppercase letters for the height and width of the large triangle,
H = 2h
W = 3(0.5h + 8.5) = 1.5h + 25.5