Oranges cost Chris $2 per pound, and she has $10.00 that she could possibly spend on oranges or other items. If she feels that the first pound of oranges is worth $2.50, the second pound is worth $2.25, the third pound is worth $1.50, and all subsequent pounds are worth $1.00, how many pounds of oranges will she purchase? What if she only had $4 to spend?