I would say your should leave 10% of your bill as a tip
1/3 because reciprocal is the opposite
Answer:
y = -1
The other dude that answered was trolling.
1 72
2 60
3 32.7
(The equation for this is 360 / # of angles)
4 140
5 108
6 Trapezoid or quadrilateral
7 not sure sorry
8 square
9 not sure man