The input for a function can be another function. If h(x) = 2x - 5, determine a simplified expression for each of the following. a) h(4x) b) h(2x+3) h(x/2-1) h(x) = 2x - 5 For a) h(4x) it can be h(4x) = (4)2x - 5 = 8x -5 however I am not sure why the 4 was not applied to the -5 also. I am not sure how to solve this problem. If anyone could give me a link to a website that explains it and gives a proof for it, I would appreciate that act very much.