PLEASE HELP ME

12. The graph of y = f(x) is shown.

f(5) = ?

Tell whatever the ordered pair is a solution of the given system.

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

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?