If the graphs of two lines of the system do not intersect at any point what can you conclude about the solution of the system

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?

Could somebody me with this radical simplification?

Find the maximum value of p= 4x + 5y subject to the following constraints :