John Anderson knows that the pizza pipeline charges its customers a certain amount per one topping pizza, plus a fixed price for delivery. The checks that John wrote for the last two deliveries were $17 for two pizzas and $31 for four pizzas. How much would each pizza cost without delivery, how much is the fixed delivery charge, and how much wood five pizzas cost with delivery

Question

John Anderson knows that the pizza pipeline charges its customers a certain amount per one topping pizza, plus a fixed price for delivery. The checks that John wrote for the last two deliveries were $17 for two pizzas and $31 for four pizzas. How much would each pizza cost without delivery, how much  is the fixed delivery charge, and how much wood five pizzas cost with delivery

Steve · Answer

If the fixed cost is f and the per-pizza cost is p, then we know: c+2p = 17 c+4p = 31 now subtract and you see that 2p = 14 now you can find p, and then c. The five pizzas cost c+5p