Answer:
4x - 3
Explanation:
Givens
f(x) + g(x)
f(x) = 3x - 5
g(x) = x + 2
Equation
f(x) + g(x) = 3x - 5 + x + 2
Solution
f(x) + g(x) = 4x - 3 Collected like terms from the equation.
Remark
If you think of f(x) and g(x) as equal to different y values, it might help you to solve questions like this.