PLEASE HELP ME ASAP PLEASE PLEASE PLEASE

jaren is selling lampshades at a craft fair. for the price per lampshade in dollars is f (x) and it is a function of the
Number of lampshades bought as shown by the graph below. What is the total cost of buying 10 lampshades from Janet's stall

PLEASE HELP ME ASAP PLEASE PLEASE PLEASE jaren is selling lampshades at a craft fair for the price per lampshade in dollars is f x and it is a function of theNu class=