0.8 can also be expressed as 8/10, so in order to find the cost of 0.8 pounds of granola, you first need to divide $2.20/10. This equals $0.22, so 1/10 of a pound equals $0.22. To find 0.8 pounds, simply multiply $0.22 by 8.
Hence, the answer is $1.76 for 0.8 pounds of granola.