Answer:

Step-by-step explanation:
The first time the basketball bounces it reaches a height of
.
The second time the basketball bounces it reaches a height of
. Therefore, after b rebounds the height that the basketball will reach is given by:

State the vertex and axis of symmetry of the graph of y=ax^2+c
General form of quadratic equation is 
There is no bx in our given equation, so we put 0x
Given equation can be written as 
a=a , b=0
Now we use formula to find vertex


Now we plug in 0 for 'a' and find out y

So our vertex is (0,c)
The axis of symmetry at x coordinate of vertex
So x=0 is our axis of symmetry
<span>The answer is four hundred eighty-six and two thousandths.</span>