Cqn you please help me out

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

Fabian harvests 10 pounds of tomatoes from his garden. he needs 225 pounds to make a batch of soup. if he sets aside 2.8 pounds of tomatoes to make spaghetti sauce, how many batches of soup can fabian make?

Which is the focus of a parabola with equation y2=4x