The equation y=-0.03x+12 gives the number of gallons of gas in your car, where x is the number of miles driven. how many gallons of gas are left after driving 200 miles?

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.