Which function represents exponential decay? O f(x) = 1/2(2)x O f(x) = 3/4 (-1/5)x O f(x) = 3(7/2)x o f(x) = 2(2/3)x​

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.