What metric unit would best measure the length of a school hallway

Based on what i know about mean, this doesn't add up.

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?