Answer:
x=6
Step-by-step explanation:
Given the x-intercepts of a parabola: 
The equation of symmetry at the parabola's vertex is x=h
Where 
In this case,

Therefore, the line of symmetry of the parabola is x=6 and is also the x-coordinate of the parabola's vertex.
Answer:
Thirty-one million, six hundred and twenty-four
Four billion, six million, eighty-five thousand, and twelve
six million five hundred thousad
twenty-five million, four hundred and thirty thousand and seven hundred and fifty-six
Step-by-step explanation:
Answer:
37/100 is already simplified, as a decimal 37/100 is 0.37 and as a percentage 37/100 is 37%
Answer: 7
Step-by-step explanation:
3+6^(2) / 9
3 + 36 / 9
3 + 4
7