The rule of a geometric sequence:

We have:

Find 
substitute:

X times -3= a
i think thats it
Answer:
Step-by-step explanation:
⅓x + 7 = -2
isolate the x term by subtracting 7 from both sides
⅓x = -9
Multiply both sides by 3
x = -27
Answer:
4
Step-by-step explanation:
Lets make
be the ? in the equation.
That becomes (
x 3) - 3 = 15.
First you have to add 3 on both sides. After doing that it gets to (
x 3) = 15 - 3.
Then you simplify it to 3
= 12.
Now you divide 3 on both sides. That gets to
= 4 after doing it.
Hope this helped! If not, please let me know! <3
Answer: no because 13(6+y) is 78+ 13y
Step-by-step explanation: