Avery tosses a coin 100 times. it lands on heads 60 times and on tails 40 times. what is the theoretical probability that it will land on heads for her next toss?

Arestaurant offers delivery for their pizzas. the total cost the customer pays is the price of the pizzas, plus a delivery fee. one customer pays $23 to have 2 pizzas delivered. another customer pays $59 for 6 pizzas. how many pizzas are delivered to a customer who pays $86?