Abcd is a parallel. which statements are true

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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.

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)