I need quickly answer pls

x = -3, x=0 extraneous

Step-by-step explanation:

The first and third options are ruled out because if you substitue zero for x into the equation you get 3/0,which is not possible.

The only two options remaining are x= 3 or x=-3.If you substitute both for x ,you will find x=-3 to be the solution.

3/-3 = [4(-3) +3]/3^2

-1 = [-12 +3]/9

-1 = [-9]/9

-1=-1 so this is true and therefore it's the solution

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: