Question 1170646
.
A small canteen offers special meal package to their customers. The profit P that the canteen 
will earn at x number of customer is modeled by the function P(x) = -25x2 + 100x  -  3000. 
How many people are needed for a profit of at least Php5,000
~~~~~~~~~~~~~~



<pre>
To answer the question, you need to solve this equation

    -25x^2 + 100x - 3000 = 5000.


Simplify it step by step

    -25x^2 + 100x - 8000 = 0

     25x^2 - 100x + 8000 = 0

       x^2 -   4x + 320 = 0


The discriminant is  b^2 - 4ac = 4^2 - 4*320, which is negative value.


Hence, the given equation HAS NO real roots.


<U>ANSWER</U>.   The problem, as it is worded, printed, posted and presented is a FAKE.
</pre>

The problem is a &nbsp;FAKE.



By posting a fake, you steal my time.



-------------


A special note to tutor @ankor@dixie-net.com


<pre>
    In such circumstances, a tutor should not edit the post of the visitor 

    and should not edit his (or her) numerical input data / numbers.



    The necessary and sufficient action is to inform the visitor about the discrepancy and to issue a WARNING MESSAGE.


    Providing the correct input is ENTIRELY the job and the responsibility of the visitor.
</pre>