Answer:
The upper graph
Explanation:
We have two quadratic function here
![y=-x^(2) +3x+5\\y=x^(2) +2x\\](https://img.qammunity.org/2020/formulas/mathematics/middle-school/letn0td1ah4nzvdig27lk237872p44k6n7.png)
If we perform the function f(x) + g(x), which is nothing more than the sum of the two functions, we obtain a linear function, since the quadratic terms are eliminated by themselves
![5x+5](https://img.qammunity.org/2020/formulas/mathematics/middle-school/et6x3y997phrl9cuxu9grumak7qbq6pnzm.png)