Rework problem 24 in section 1 of Chapter 7 of your textbook, about the Columbus Cruiselines, using the following data. Assume that the Nina has 550 regular cabins and 160 deluxe cabins; that the Pinta has 410 regular cabins and 420 deluxe cabins; and that the Santa Maria has 810 regular cabins and 540 deluxe cabins. Assume also that during the season there will be a demand for 11200 regular cabins and a demand for 7100 deluxe cabins. Assume also that the cost of operating the Nina for a week is $117000, that the cost of operating the Pinta for a week is $116000, that the cost of operating the Santa Maria for a week is $178000. For how many weeks should each ship be scheduled in order to meet the demand at minimum cost

Wo firms, a and b, each currently dump 50 tons of chemicals into the local river. the government has decided to reduce the pollution and from now on will require a pollution permit for each ton of pollution dumped into the river. it costs firm a $100 for each ton of pollution that it eliminates before it reaches the river, and it costs firm b $50 for each ton of pollution that it eliminates before it reaches the river. the government gives each firm 20 pollution permits. government officials are not sure whether to allow the firms to buy or sell the pollution permits to each other. what is the total cost of reducing pollution if firms are not allowed to buy and sell pollution permits from each other? what is the total cost of reducing pollution if the firms are allowed to buy and sell permits from each other? a. $3,000; $1,500 b. $4,500; $3,500 c. $4,500; $4,000 d. $4,500; $2,500