Could someone me do this using substitution i need to know how to do this for math

Identify the parent function that can be used to graph the function f(x)= (1/4x)^3

Match each inequality to the number line that represents its solution

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?