A direct relationship requires a change in the same direction of both variables, answer c.
See attachment for math work and answer.
Answer:
A, B, E
Step-by-step explanation:
Permutations are involved when order matters, as in lane assignment, passwords, and seating charts.
When the end result is a "group of 10 students", "3 employees", or "4 cashiers", clearly order does not matter. One student, employee, or cashier is as good as another in these cases.