Answer:
Step-by-step explanation:
we know that
The equation of a vertical parabola into vertex form is equal to
where (h,k) is the vertex of the parabola
The axis of symmetry is equal to
In this problem the parabola open upward
so
the coefficient a is positive
The coordinates of the vertex will be 
(the y-coordinate is negative)
so
the equation will be of the form
Answer: There are 19 classes
Step-by-step explanation:
divide the total amount amount of students by the amount of students in each class
Just plug in the numbers for the variables.
20+3(8)+17(2)=
Answer:
The answer I believe is : D.
~ Hope this is correct, if I'm wrong I'm sorry, have a gr8 day/ night my friend!~
Step-by-step explanation:
4x^2 +20x +25
(2x+5)(2x+5)
