The price of a certain item changes over time. The equation y=−3.42x^2+173.64x−983.48 models the total y dollars of profit a company makes in one day on the item the when the price of the item that day is x dollars. What is the approximate profit the company makes on the item on a day when the item price is $12?

$492.48

$607.72

$1592.68

$2574.68

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answer: 12

step-by-step explanation:

because yes

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

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step-by-step explanation:

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