A company charters a party boat that normally costs $56 per person. A group discount reduces the fare by $0.70 for each ticket sold. The more tickets sold, the lower is the per-person fare. The maximum capacity of the boat is 80 people, including the crew of 10 people. What size of group would maximize the boat company's revenue? SOMEONE PLEASE HELP

In the final round of trivia competition, contestants were asked to name as many states that begin with the letter m as they could in 15 seconds. the bar graph shows the number of states the contestants were able to name. how many contestants participated in the final round of the competition?

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.