PLEAS HELP ;)

solve the system of equations

What expression is equivalent to 42x-56y

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?

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is