Jeff has a lawn mowing business and needs an average of 25 minutes to cut the grass on lawns between 900 and 1200 square feet. He has already mowed one lawn of this size today and is planning on mowing more lawns of this size between 9 am and 1 pm. a. Given his time constraints, use set notation to describe all the possible number of complete lawns, L, that Jeff can have mowed by the end of the day. b. Use interval notation to describe the range of lawn areas that Jeff can mow on this day given his time constraints.