Keagan is going out for pizza with his friends. For $77 total, they can buy "p" pizzas. Each pizza cost $11. How many pizzas can they buy?

To find the number of pizzas Keagan and his friends can buy, we have to divide the total cost by the cost of one pizza: $77 รท $11/pizza = <<77/11=7>>7 pizzas. Answer: \boxed{7}.