Find the equation of the parabola going through the points (1,3), (0,3) and (2,5)
1 answer:
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Answer:
Part (A): The required expression is .
Part (B): The correct option is C) the amount (in dollars) the company earns from each phone.
Step-by-step explanation:
Consider the provided information.
A used electronics store pays $50 for each cell phone, spends $15 refurbishing the phone, and sells the refurbished phone to a customer for $120.
Let x to represent the number of cell phones they sell.
Part (A)
For x cell phones store will pay $50x. Also store will spend $15x to refurbishing.
We will use negative sign for pay and spend money, Also use positive sign for selling amount.
Therefore the required expression is:
Company's earnings =
Simplify the expression as shown.
Hence, the required expression is dollar
Part (B) What does the coefficient of the expression in part (a) represent?
The coefficient of the expression is the amount (in dollars) the company earns from each phone.
Hence, the correct option is C) the amount (in dollars) the company earns from each phone.
Answer:
Step-by-step explanation:
Well since in,
the 3x^2is negative that means the parabola has a maximum not a minimum meaning we can take out choices,
B and D.
To find the maximum let’s graph the given equation,
Look at the image below.
By looking at the image we can tell that the maximum is at (1,1).
So the answer is choice A (1,1)
