Mr. brown's class is collecting books for a book drive. they started with 2 books. on the first day, they had 6 books. on the second day they had 18 books. write an equation that models this situation. a) y = 4x + 2 b) y = 2(3)x c) y = 3x + 2 d) y = x2 + 2

The equation which models the equation is given by :

Step-by-step explanation:

Mr. Brown's class is collecting books for a book drive.

They started with 2 books.

Now, x is the number of days

A). y = 4x + 2

on day 1, x = 1

⇒ y = 6

On day 2 , x = 2

⇒ y = 10 but on day 2 Number of books he had is given to be 18

So, This option is rejected

on day 1, x = 1

⇒ y = 6

On day 2 , x = 2

⇒ y = 18

So, This option is correct

C). y = 3x + 2

on day 1, x = 1

⇒ y = 5 but on day 1 Number of books he had is given to be 6

So, This option is rejected

D). y = x² + 2

on day 1, x = 1

⇒ y = 3 but on day 1 Number of books he had is given to be 6

So, This option is rejected

Therefore, The equation which models the equation is given by :

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

the answer is 99.