What is the distance between points A and B? O1/3 O1/2 O 1 1/3 O1 1/2

Need on this one asap im almost done with this subject

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.

4+(2+x) can you me solve this problem