Please help grades are due tmr

How do i do this? i don’t understand

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?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?