I have no idea why you deleted my answer i am sorry if you are mad at me for something. hopefully it was right though.
How exactley do you want me to do I would really like to help you!
A is with3/5 x 11/4
B is with 3/5 x 17/25
C is with 3/5 x 4/5
<h3>Answer:</h3>
a, b, c) see the attachment
d) y = -34.4762(x -2.44268)² +281.613
<h3>Explanation:</h3>
Using Desmos is pretty straightforward for doing what the problem statement asks. You make a table, then write an equation for y₁ in terms of x₁ using the tilde (~) for the equal sign. Desmos chooses values of the coefficients to make the curve of best fit and lists those for you.
For part (b) of your question, you will have to copy the values into the form of the equation: replace "a" with its value, "b" with its value, "c" with its value.
The vertex point has been highlighted on the curve, so you can read its coordinates on the graph.
_____
The equation you write relating x₁ and y₁ can be written in vertex form, so you can have Desmos tell you the appropriate numbers directly. (See the second attachment.) As it works out, you don't have to, because the "a" value and the vertex coordinates are all you need to write the equation in vertex form.
Answer:
1.8%
Step-by-step explanation:
(8c5 * 7c0)/15c5
= 0.018
This is the answer which I get when I solve this... cross check the calculations once.