Function Operations, Adding and Subtracting Given the function f(x) = 7x - 5 and the function g(x) = 9x + 6x + 7 determine each of the following. a) Evaluate f(9) + g(13) f(9)+g(13) b) Evaluate f(7) g(8) |f(7)-g(8) = c) Evaluate f(x) + g(x) |f(x)+ g(x) = d) Evaluate f(x) - g(x) e) Evaluate g(x) - f(x) |f(x) = g(x) = g(x) = f(x) =