1. The problem statement, all variables and given/known data Find a. (f+g)(x) b. (f-g)(x) c. (fg)(x) d. (f/g)(x) f(x)=2x-5 & g(x)=4 2. Relevant equations (f+g)(x)=2x-1 (f-g)(x)=2x-9 (fg)(x)=8x-20 (f/g)(x)=2x-5/4 3. The attempt at a solution When I've completed all the other equations, I'm stuck on domain. I'm thinking that its all reals, but I'm not quite sure on how this is true. Is it because it cannot equal zero, or a non-negative number? In other other words how exactly do you find the domain?