Answer:
f(x)=start fraction 4 over x squared End fraction minus start fraction 2 over x end fraction +1
First let’s establish a few things, The first car can travel 300 miles with 20 gallons of gas, if 14 gallons of gas costs 49.49 then for ever gallon of gas Sam is paying 3 dollars and 53.5 cents. That means for 20 gallons, Sam will need around 71$ for the entire trip if he uses the first car.
Everything you need is in the picture attached.