Answer:
The vertex is (3,1)
Step-by-step explanation:
(3, 1)
Locate the vertex. Here it represents the maximum value of this quadratic function. The x-coordinate shown is 3 and the y-coordinate is 1. Thus, the vertex is (3, 1).
Answer (C) 50 degrees
Steps: please check the attached image for details
Commuttative Property for Addition
There is the answer above