Your new smart car runs on a mixture of ethanol and gas. It has a 15 gallon tank to fill. You can buy two types of fuels, one that is 30 percent ethanol and another that is 80 percent ethanol. How much of each type of fuel should you use so that the mixture is 40 percent ethanol?

Which graph shows a function with a range of all real numbers greater than or equal to -1

Which ahows the graph of the solution set of 6x+4y< 12

Answer asap ! the shortest path from point a to point b goes through a pond. to avoid the pond, you must walk straight 34 meters along one edge of the pond, then take a 90 degree turn, and again walk straight 41 meters along another edge of the pond to reach point b. about how many meters would be saved if it were possible to walk through the pond? a. 11 m b. 20 m c. 30.45 m d. 21.73 m