Question

Billy's family makes and sells olive oil. When they receive an online order, Billy packs it up and ships it. The function f(X) gives the number of boxes Billy uses when packing an order of x bottles.
What does f(4) = f(2) tell you?
Billy uses the same number of boxes to pack 2 bottles or 4 bottles.
When packing a 4-bottle order, Billy uses 2 boxes.

Answer 1

Your first sentence is correct: f(4) = f(2) means Billy uses the same number of boxes for a 4‑bottle order as for a 2‑bottle order.

The second sentence is not necessarily true unless you already know f(2) = 2. f(4) = f(2) only says the two values are equal; it does not give the actual number of boxes. For example, both could be 1 box, both 2 boxes, etc.