Answer:
w = 6.5x + 1.5y
Step-by-step explanation:
Given a length l and width w, the perimeter of a rectangle is denoted by:
P = 2l + 2w
Here, we see that P = 15x + 17y, while l = x + 7y. Substitute these into the formula to solve for w in terms of x and y:
15x + 17y = 2 * (x + 7y) + 2w
15x + 17y = 2x + 14y + 2w
13x + 3y = 2w
w = [tex]\frac{13}{2} x+\frac{3}{2} y[/tex] = 6.5x + 1.5y
~ an aesthetics lover
