Final answer:
To determine the number of ounces sold in each tube of glue, subtract the amount of glue left from the initial amount of glue in the 3-pack. Each tube of glue contains 1.08 ounces.
Step-by-step explanation:
To determine the number of ounces sold in each tube of glue, we can subtract the amount of glue left from the initial amount of glue in the 3-pack. Since Jackie used 0.27 ounce of glue and had 1.35 ounces left, we can subtract 0.27 from 1.35 to get 1.08 ounces. Therefore, each tube of glue in the 3-pack contains 1.08 ounces of glue.