Answer:
5
Step-by-step explanation:
The vertex is at (4, -49) and the axis of symmetry is at x= 4.
To find the vertex of this equation, use this method:

a=2
b=-16
This will help get your x value and the axis of symmetry. To find the y value of the vertex, insert the x value, 4 to get your y value, -49.
Answer:
Alright well the Answer to your question is
x > 10 Hope this helps :)
Step-by-step explanation:
Answer:
if you are solving for x then the answer is 5
Step-by-step explanation:
For 6 hours charges $330
for 9 hours charges x
---------------------------------
x = 9*330/6 = 495 so choice C. is right