Answer:
She will use 3/10 cups of blueberry to prepare muffins for herself and tennis team
Explanation:
If recipe for a batch of blueberry muffins calls for 3/5 cups of blueberries
If Rallye wants to make 1/2 batch of muffins, then she will use 1/2 of 3/5 cups of blueberry
That is,
1/2 of 3/5 cups of blueberry
=1/2×3/5
=3/10