I don't know if i'm right or what because I haven't learned binomial in like almost 4 years. (3x+y)?
Get unknowns on one side and know on other side.
Divide both sides by -2
X= -7
I don’t know I can’t see the graph real well
Answer:
62.5%
Step-by-step explanation:
We can write a proportion. We know that $50 is the original value and $80 is the marked up price. We don't know the marked up percentage. Let's call it x. We write equal ratios of
comparing percent and
comparing the 50 to the marked up price. We then set them equal.

We then cross multiply across the equal sign from numerator to the opposite numerator.
80(x)=50(100)
80x=5000
We divide to find x.
x=62.5
This means the bicycles are marked up 62.5% and the original value is 37.5%.
It means the speed (velocity) was constant - the object traveled the same distance per time period throughout the graph.