The local grocery store is having a sale on Peanut Butter. Below are some of the sales being offered. Part 1: Which sale offers the lowest price on a jar of peanut butter? Please show all your calculations and write your answer in a complete sentence.

Part 2: Charlie has recently started making his own homemade peanut butter and is looking to sell jars of it at the local grocery store. He has been marketing his jars for $5 each but they have not been selling. Help Charlie create a sale on his peanut butter so that shoppers are more likely to buy his product. Show all work and justify your reasoning.