Help? Thx in advance will give brainliest to the correct answer!

C. x = 3

Step-by-step explanation:

First you should bring expand the bracket to make things easier:

4 ( 5x + 3 ) = 14x + 30

20x + 12 = 14x + 30

Next, you should bring all x terms to one side and whole numbers to the other:

20x - 14x = 30 - 12

Then you bring the terms together:

6x = 18

Now you isolate x by dividing each side by 3:

x = 3

The answer is x = 3.

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3