Can somebody please do both problems

Find the maximum value of p= 4x + 5y subject to the following constraints :

An 18% discount on a watch saved a shopper $72. find the price of the watch before the discount

Mr. lash has 42 pounds of dog food to divide among his dogs. if each dog receives 7/8 pounds of food for each feeding, how many times can mr. lash feed his animals?