Answer: 
Step-by-step explanation:
The Explicit formula in function notation for a geometric series is:

Where
is the nth term of the sequence,
is the first term in the sequence and
is the common ratio.
Given the following geometric serie:

The common ratio is:

And the first term is:

Therefore, substituting values, we get that the Explicit formula that represents this geometric series is:

X = 15
X + 90 = 7x
X = 7x - 90
X - 7x = -90
-6x = 90
Divide both sides by -6
X = 15
Answer:
23
x^
4
y^
7
Step-by-step explanation:
Answer:
I'm not sure what the question is?
Step-by-step explanation:
??????