Answer:
The equation of parabola in vertex form is 
Step-by-step explanation:
Given coordinate of vertex is
and the parabola passes through the point 
So, the equation of parabola in vertex form is

Where
is the coordinate of the vertex.

Plugging these value in equation we get,

Now, we will find the value of 
Plug the coordinate 


Plug the value of
in the equation 
So, the equation of parabola with vertex
and passes through the point
is
≅
The basketball fell at rate of 9.8 feet per second
Step-by-step explanation:
The rate is the distance per unit time
Here
Given
Distance = height = h = 53.9 feet
time = t = 5.5 sec
The rate will be given as:

Hence,
The basketball fell at rate of 9.8 feet per second
Keywords: Division, decimals
Learn more about division at:
#LearnwithBrainly
To answer this question you would have two steps involved. The first step would be to find the percentage of $42 that gives us $2.94. Set up an equation 42x=2.94. Divide both sides by 42 to get the decimal 0.07. This equal 7%. Take this percentage multiplied by the $58. You need to change the 7% into 0.07 to be able to calculate it. 0.07 x 58 = $4.06 sales tax.
The answer to this problem is D. 2^4x=2^3x-9