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.
3 and 2 should be the only roots
2 x (3+6z) = 6 +12z
This is how you do it
I believe the answer is 3
Your answer is a Square Pyramid.
(Hope I helped :C
