Idk if this is right or how to answer #1

Shianne performs a study to learn more about caffeine and how our bodies react to it. She collects data to learn how quickly the human body metabolizes caffeine. She gives each person in her study 200 mg of caffeine, and then measures the level of caffeine in their bloodstream at specific times. Shianne collects data values and plots these data values on a coordinate grid (x represents mg of caffeine in the blood; y represents time in hours). You were asked whether shianne would be able to use her graph of caffeine levels in the blood, as measured at a series of equally spaced times, to determine the kind of mathematical relationship her data has. Assignment Describe your solution to this scenario by answering the following questions: . What information will Shianne's graph give her about the type of mathematical relationship that her study will reveal? It will show her that . What mathematical technique can Shianne use to determine the kind of relationship being modelled in this study? The mathematical technique used to determine this relationship being modelled would be to perform an exponential regression and see if she can get an r2 close to 1 . What characteristics of the equation or the graph should Shianne examine to determine the type of relationship being modelled? She should examine if the graph is continuous, if there is a growth/decay factor, to see if it's growing over equal intervals, and also check to see if the r2 is close to 1