If y= 5x-2 and x= 4b+3 then y is equivalent to which of the following

y = 20b + 13

Step-by-step explanation:

From the above, we want to get y

Using the given d value, we simply proceed to substitute

y = 5x-2

x = 4b + 3

Substituting x-values, we have

y = 5(4b + 3)-2

y = 20b + 15-2

y = 20b + 13

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.