PLEASE HELP I'LL MARK YOU BRAINLIEST A) Suppose a scale model has a scale of 2 inches = 3 feet. What is the scale factor?
b) Suppose the scale is 2 inches = 4 yards. What is the scale factor?

A= 4:1
B= 1:72
I looked up the answers and came up with this hope it helps

The answer is 3.33%. Anna reduced her CO2 emissions by 3.33% from using 600 gallons of gas annually than from using 900 gallons of gasoline annually. I arrived to this answer through multiplying gallons by 20 pounds of C02 (600*20) = 12000; (900*20) = 18000. Then I proceeded to subtract 12000 from 18000 which yielded me 600 (18000-12000 = 600). Lastly, I divided 600 by 18000 and it gave an answer of .0333. Then, I converted it to percent, thus, yielding me the answer of 3.33%.