A local club is arranging a charter flight to Hawaii. The cost of the trip is $597 each for 81 passengers, with a refund of $5 per passenger for each passenger in excess of 81. a. Find the number of passengers that will maximize the revenue received from the flight b. Find the maximum revenue. a. The number of passengers that will maximize the revenue received from the flight is (Round to the nearest integer as needed.) b. The maximum revenue is $