Determine whether the following series is arithmetic or geometric. Then evaluate the finite series for the specified number of terms.
81 + 27 +9+3+...; n= 180
Choose the correct answer below.
The series is arithmetic.
The series is geometric.
The sum is S180 =
(Type an integer or decimal rounded to two decimal places as needed.)

dd

the first step is adding 40 to both sides of the equation

Step-by-step explanation:

Solving the quadratic equation means we solve the equation for x

To solve for x we need to isolate x^2

To isolate x^2, remove -40 from the left hand side

In order to remove -40 we do opposite operation

Opposite of -4 is +40

So we add 40 on both sides of the equation

the first step is adding 40 to both sides of the equation