Answer:

Step-by-step explanation:
Rewrite the division as a fraction.
so the coat went down from 50 to 35, namely 15.
if we take 50 to be the 100%, what is 15 off of it in percentage?

Answer:
45/3 or 15 simplified
Step-by-step explanation:
so b. 15
Since there isn't a picture of the graphs, I attached one, of my graph, to this answer.
I'm also assuming (y2 2x+1) is actually (y< 2x+1).
Possible solutions are within the purple section of the attached image.
I hope this is helpful to you.