The points plotted in the coordinate plane represent the possible amounts, in pounds, of peanuts and cashews that someone can buy in order to spend exactly $40.00 total. The price per pound of peanuts is the same and the price per pound of cashews is the same. The graph shows the pounds of peanuts on the x-axis and the pounds of cashews on the y-axis, and the plotted points include and . What is the price, in dollars per pound, of cashews?