PLEASE DONT WASTE MY POINTS ALSO MALEKAI IF YOU KNOW THIS PLEASE ANSWER THE QUESTION

Answer:
It is a function because all functions have inputs and outputs and it said "If the size is a input and the price is a output is this situation a function" But like I said It is function because functions have inputs and outputs
Step-by-step explanation:
this is nathans answer but its so it will pop up for others too