Answer:
13
Step-by-step explanation:
(3 times 2)+7=x
6+7=x
x=13
The sequence is geometric and the common ratio is 2
I believe that it is 2x^2+1x-2
First, we are going to want to plug in the values we are given. In this case, we will end up with the equation:

From here, we can solve the equation to find
:

- Apply the commutative property to rearrange the terms on the right-side of the equation to make the distributive property more apparent

- Apply the distributive property

- Subtract 8 from both sides of the equation

- Divide both sides of the equation by -2
We have found that c = 1.