On a camping trip, Jessica needs at least 3 pounds of food and 0.5 gallon of water per day. Marc needs at least 5 pounds of food and 0.5 gallons of water per day. Jessica's equipment weights 10 pounds, and Marc's equipment weighs 20 pounds. A gallon of water weighs approximately 8 pounds. Each of them carries their own supplies, and Jessica is capable of carrying 35 pounds while Marc can carry 50 pounds. a. Graph the inequalities that represent how much they can carry.
b. How many days can they camp, assuming that they bring all their supplies in at once?
c. Who will run out of supplies first?