Answer: OPTION D.
Explanation:
1. You have the following function given in the problem above:
![F(x)=x+2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/eebvlt99acoxfwg89hj8553wpk2nb6jedv.png)
2. By definition, the input value is de independent value and the output value is the dependent value.
3. Therefore if the input value is 5, you have to substitute x=5 into the function given in the problem.
4. Then, you have that the output value asked is:
![F(5)=5+2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/dbgenyj7tc0ytuqgelnt75n3mwn7vsdpnn.png)
![F(5)=7](https://img.qammunity.org/2020/formulas/mathematics/middle-school/xpdj2du8hyn5nrcqoq4899cjmo7ufbe8sp.png)