Answer:
6 3/4 teaspoons of baking powder
Explanation:
Because 8 jumbo blueberry muffins call for 1 1/2 teaspoons of baking powder, and you need 36 jumbo muffins (1 dozen = 12, 12*3=36), you need to divide 36 by 8
This should get you 4.5, then multiply 4.5 by 1 1/2 and you get 6.75 or 6 3/4
Hope this helps! :)