The table shows the cost of downloading songs. Number of Songs Cost
0 0
1 $1.25
2 $2.50
3 $3.75
4 $5.00
What does the rate of change mean in this situation?

The cost increases $5.00 for each additional song that is downloaded.

The cost increases $1.25 for each additional song that is downloaded.

The cost increases $0.25 for each additional song that is downloaded.

The cost increases $2.50 for each additional song that is downloaded.

From the table we can see:

Number of songs:         Cost:

         0                         $ 0

         1                         $1.25

         2                         $2.50

         3                         $3.75

         4                         $5.00

Therefore the rate of change is: (2.50 - 1.25) / ( 2 - 1 ) = $1.25

It means that : C. The cost increases $1.25 for each additional song that is downloaded.

6 on both sides and twelve on the top and the bottom

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.