When working on problems from 2.4 that ask you to combine functions (like

53-58

or 65,69 ) how do you know whether the functions should be added, subtracted, multiplied, divided, or composed? I know that this his hard to put into words. Think about your general strategy, what parts of the problem do you look at? Do you have a process you work through? Try to answer in a few sentences. You can refer to problem 1 in this post if it would help to reference a specific example.