Answer:
r = 90
Step-by-step explanation:
Our goal is always to get the variable we're trying to solve for on one side of the =, and everything else on the other side. Since we are solving for r here, we want to get rid of the 20 first, and then the 2.
subtract 20 from both sides:
divide both sides by 2:

I have attached the graph
Answer:
2.5 pie/person
Step-by-step explanation:
(5 pie)/(2 person) = (5/2) pie/person = 2.5 pie/person
You basically plug in the x values with the given function so the y values are -5,-10,-15,-20
Answer:
AB=12 BC=9
Step-by-step explanation:
Any side of a triangle must be shorter than the other two sides added together.
AB and A'B' must measure LESS than the other 2 sides
15 is 3/4 of 20
12 is 3/4 0f 9
20/15 12/9 = 1.3333333........