show work please!!

Problem 4. The staff at Watson Cafe agreed to split any tips left at a particular table in the following way: The cafe receives 2% as a "tip charge", to cover the fees associated with charging the customer. The busperson receives 20% of the waiter's tip, the hostess receives 6% of the waiter's tip, and the bartender receives 10% of the waiter's tip. a. If the average customer leaves a 15% tip, what percentage of the cafe's total revenue does each party receive? b. The hostess received $3 from a certain table. Is there enough information to compute how much the total bill for the table was? If so, what was it? If not, what information is needed? Problem 5. We have 400 feet of fencing to build a rectangular field that borders a river. Show how to find the length and width of the rectangle that gives us the field with the largest possible area. Also, compute the largest possible area