Papa John's is offering a special on large pizzas. The advertisement reads "Purchase any large pizza at regular price and pay only $6 for each additional large pizza&q…

Question

Papa John's is offering a special on large pizzas. The advertisement reads "Purchase any large pizza at regular price and pay only $6 for each additional large pizza". If Ralph purchased 7 pizzas for $58 (tax free), writing your equation from problem #3 in slope intercept form, you find the regular price of the first large pizza Ralph purchased to be $____________________________. (Your answer should be a whole number, do not include the dollar symbol or a decimal)

Answer 1

22

Explanation:

To find out how much the other pizzas cost you need to do 7-1 because that is the other 6 pizzas not including the 1st pizza. Then multiply 6 x 6 because that is the total cost for the other pizzas after the first pizza bought. This means that the pizzas cost 36 dollars without the first pizza. Then do 58-36 for the first pizza cost which is 22 dollars. Therefore the regular price of the first large pizza is 22 dollars. If you were to write it in slope intercept form it would be Y=6x+16 {x
`\geq`1} with Y representing the cost and x representing the pizza. You would need a domain as if you were to buy 0 pizza it wouldn't mean that it would cost you 16 dollar. Which is why you want the domain to be greater than or equal to 1 because if you bought 1 pizza it would cost 22 dollars