What are three specific problems that will occur when managers consistently underestimate the number of guests they will serve on a given day? What are three specific difficulties that will likely result if managers consistently overestimate the number they will serve?

Your sister turned 35 today, and she is planning to save $60,000 per year for retirement, with the first deposit to be made one year from today. she will invest in a mutual fund that's expected to provide a return of 7.5% per year. she plans to retire 30 years from today, when she turns 65, and she expects to live for 25 years after retirement, to age 90. under these assumptions, how much can she spend each year after she retires? her first withdrawal will be made at the end of her first retirement year.