C. because stimuli is how your body responds to something, and in this case, someone's heart rate increases WHEN their blood oxygen drop. Do you see how it responds? ;-)
8: this model is similar to a real life model because it shows what you can have in and around your house
9: the way this model can be useful is by helping show how to build your house the way you want it to be and what you would want
Answer:
On a coordinate plane, a parabola opens up. It goes through (0, 3), has a vertex at (1, 2), and goes through (2, 3).
Explanation:
I used a graphing calculator to visualize the problem.
