Ben Lieber is a waiter at Harbor House, where he receives a weekly wage of $80 plus tips for a 40-hour workweek. Lieber's weekly tips usually range from $280 to $400. Round your answers to the nearest cent.

a. Under the Fair Labor Standards Act, the minimum amount of wages that Lieber must receive for a 40-hour workweek is $ 85.20 The correct answer is is $85.20. Can someone tell me how to get to that solution?

b. Since Harbor House is in violation of the FLSA, the additional amount it should pay Lieber each week to meet the minimum wage requirement for a tipped employee is $ 5.20 The correct answer is is $5.20 Can someone tell me how to get to that solution?