Which represents a function

Functions are usually represented by a function rule where you express the dependent variable, y, in terms of the independent variable, x. y=2.50⋅x. You can represent your function by making it into a graph.

Step-by-step explanation:

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!