To solve this problem, we will use the following graph as reference:
From the above graph, we get that the quadratic equation represents a vertical parabola that opens downwards with vertex:
![(3,5)\text{.}](https://img.qammunity.org/2023/formulas/mathematics/college/w2qlh5r02m8dism4z09ym37953dqejq4lg.png)
The domain of the function consists of all real numbers, and the range consists of all numbers smaller or equal to 5.
Answer:
Maximum of 5, at x=3.
Vertex (3,5).
Domain:
![(-\infty,\infty).](https://img.qammunity.org/2023/formulas/mathematics/college/p8nf562rehi1hdnee4yy1pihnkhwem8yde.png)
Range:
![(-\infty,5\rbrack.](https://img.qammunity.org/2023/formulas/mathematics/college/7p9mumwv6c1z90mx1aaekrh04d6t9dfcle.png)