Step-by-step explanation:
b2 =5
.....................
If she started with $40 and ended up with $10, that means she must've used $30. Since the popcorn bags were all identical and she bought 12, you can divide 30 by 12 which gives you 2.5.
The answer is $2.50.
There would be 6 shapes, and it would depend on what those shapes are since you wouldn't know the measurements.
