Respuesta :

14850 is the average profit 
and 18000 is the charge of $40
so 18000-14850 is your answer

We are given

total number of units sold =450

price of per unit =$ 40

average cost of per unit =$ 33

we know that

profit per unit = price per unit - average cost per unit

now, we can plug value

profit per unit = $40- $33

profit per unit = $7

now, we can find total profit

total profit = profit per unit * total number of units

now, we can plug values

and we get

total profit =[tex] 7*450 [/tex]

total profit =$ [tex] 3150 [/tex].................Answer