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Mathematics 21 Online
OpenStudy (anonymous):

A GROCERY STORE SELLS FOUR DIFFERENT JARS OF PEANUT BUTTER. DETERMINE WHICH IS THE BEST BUY BASED ON THE COST PER UNIT. 12 OUNCES FOR $1.24 18 OUNCES FOR $2.11 26 OUNCES FOR $2.76 34 OUNCES FOR $3.23

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