Jeannette needs 5 1/2 balls of yarn or 5.5 balls of yarn to knit a blanket.
This question requires finding the number of balls that are necessary to knit a blanket based on the information provided.
Yarn to knit a hat:
Therefore, Jeannette uses 1 ball of yarn to knit a hat.
Yarn to knit a sweater:
Therefore, Jeannette uses 3 balls of yarn to knit a sweater.
Yarn to knit a blanket:
Therefore, Jeannette uses 5 1/2 balls of yarn or 5.5 balls of yarn to knit a sweater.
Note: This question is incomplete; here is the possible missing part.
How many balls of yarn does Jeannette use to knit a blanket?
Learn more about ball of yarn in: https://brainly.com/question/78885