I need help with this pls !

Do not comment if you aren’t going to . create a real-life situation and create a system and show how it might be modeled algebraically with a system of equations (or inequalities) show all work include a few sentences explaining the situation, your variables of choice and what each represents, and how you would set it up and solve it algebraically. !

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

How many grams the dog will eat in 3 days?