Final answer:
To find out how many of Joe's chip bags are Sour Cream and Onion, multiply the total number of bags (15) by the fraction of bags that are Sour Cream and Onion (0.6). The number of bags that are Sour Cream and Onion is 9 bags.
Step-by-step explanation:
To find out how many of Joe's chip bags are Sour Cream and Onion, we need to multiply the total number of bags (15) by the fraction of bags that are Sour Cream and Onion (0.6). So, the number of bags that are Sour Cream and Onion is 15 x 0.6 = 9 bags.