Supply-and-Demand Schedule for Portable Music Player Price of Music Player Quantity Supplied of Music Players Quantity Demanded of Music Players
$50
O
500
$100
50
350
$150
200
200
$200
450
75
$250
600
0
In the supply-and-demand schedule shown above, the equilibrium price for portable music players is
$100
$150
$250

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.

c) yes, because of asa or aas