Ben needs to buy orange juice he can buy 64 fl oz at the grocery store for $2.00 or he can buy 256 fl oz at the whole sale for $7.50 a) find the unit price for the grocery store orange juice. round you answer to the nearest thousandth b) find the unit price for the grocery store orange juice. round your answer to the nearest thousandth c)where should ben buy the orange juice if he wants the best deal? explain