Max's car holds 18 gallons of gasoline. driving on the highway, the car uses approximately 2 gallons per hour. let h represent the number of hours max had been driving on the highway. write an expression that shows many gallons of gasoline max has left after driving h hours.

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field