Answer:
B.
Christina's price per poster is cheaper than Stacie's price per poster.
Step-by-step explanation:
Divide each value
By using Pythagoreans Theorem: a^2 + b^2 = c^2
You look for two good points on the graph, then you rise and run.( go up then move right or left)
You can look it up on Math.com or some kind of math website. There are plenty of options. Also, there are practice tests that you can take to see if you understand the subject.
A positive correlation means sales are rising because of advertising
the steeper the chart the more money is being made, so the owner would be happier with a steeper slope