Supplementary angles sum to 180°
180-27=153°
The formula is (y2-y1)/(x2-x1)
Plug in the values. Be careful two minuses become plus
(-7+4)/(3+6)=-3/9= -1/3
Your answer is A, because a verticle angle is made with two intersecting lines
She bought 15 packages. You divide 86 by 6, but there is a remainder. pay no attention to it though, just add 1 to the answer.
