Can someone please explain how to do this I going to have it on a test PLEASE HELP

The Number is 11

Step-by-step explanation:

by first condition

we got it is an odd number

second condition

number less then12

third condition

between 10 to 14

Now,

odd number between 10 to 14

is 11 and 13

13 is greater then 12

therefore 11 is your answer

step-by-step explanation:

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.