Kenneths back yard is in a shape of a rectangleit's a length of 12 yards and a width of 10 yards. a bag of grass seed costs $25.99 and covers 400 ft.² how much will kenneth spend on grass seed to cover his backyard.

The area of his backyard is 120 yards or 360 feet since one yard is 3 feet.  unit rate is it would cost $0.06 to cover each foot in his backyard. since he has to cover 360 feet multiply .06 by 360 and get 21.60. so it costs $21.60 to cover that guys backyard with grass.     ya welcome :)

Maybe fx = lxl because of the way the x is positioned is that what he