Additional exercises can be found at the textbook web site. The problems below are taken from the May 26, 2017 version of the additional exercises.
A sales representative covers territory in Iowa and Kansas. Her daily travel expenses average $120 in Iowa and$100 in Kansas. Her company provides an annual travel allowance of $18000. Her company also stipulates that she must spend at least 50 days in Iowa, and 60 days in Kansas per year. If sales average $3000 per day in Iowa, and $2500 per day in Kansas, how many days should she spend in each state to maximize sales? Graph the feasible set and then solve this problem graphically.