Answer:
The best buy is the 14-oz package at $0.37/oz.
Explanation:
6-ounce package costs $2.28:
$2.28 / 6 oz = $0.38/oz
14-ounce package costs $5.18:
$5.18 / 14 = $0.37/oz
26-ounce package costs $10.40:
$10.40 / 26 oz = $0.40/oz
Answer: The best buy is the 14-oz package at $0.37/oz.