Answer:
Explanation:
if Adalyn use 2.5 yards to make 3 pillows
than for 12 pillows she will use (2.5yards x12)/3=10 yards
you can see it with a different approach as well
2.5 y............3 pillows
5 yards.........6 pillows
7.5 yards.......9 pillows
10 yards............12 pillows