The area of the rug is ("r" squared x 3.14). The are of the room 4r squared. The area of the area of the room is 4r - (r squared x 3.14).

gas prices (new)

Gas bill per week; p= price t= total

350/mpg x p = t

350/4 x 1.93 = t

87.5 x 1.93 = t

87.5 x 1.93 = 168.87

284.38-168.87=115.51 I would save $115.51!

That is a lot cheaper than what i would spend before.

Gas bill for a month;

(350/mpg)p x 4=t

350/4 x 1.9 x 4 =t
87.5 x 1.93 x 4=t
168.87 x 4 = 675.48 I would be able to spend 462.04 on different items 

Gas bill for a year;
(350/mpg)p x 4 x 12=t
(350/4)1.93 x 4 x 12=t
87.5 x 1.93 x 4 x 12=t
168.87 x 4 x 12=t
168.87 x 48= 8,105.76 I would save $5,544.48.

Gs bill for 75 years;
(35o/mpg)p x 4 x 12 x 75=t
(350/4)1.93 x 4 x 12 x 75=t
87.5 x 1.93 x 4 x 12 x 75=t
168.87 x 48 x 75=t
8,105.76 x 75=607,937    I would save $415,852 dollars for 75 years. I would still spend a lot of money but not as much.