She should purchase 120ft of material to cover the rectangular room.
12ft x 10ft = 120ft
y ≤ - 1.6x + 6 and pounds inequality: y ≥ - x - 4.
W=-37/24, 1 13/24, or -1.5416
A=pir^2
a=pi13^2
a=169pi
a=530.66 square cm
247/38=6.5. This tells us it will take 6.5 hours to drive 247 miles. Hope it helps.
