What is the sum of the geometric series in which a1 = 7, r = 3, and an = 1,701?

The sum of the series is 2,548.

In a geometric series, the values are being multiplied by a constant rate. In this series, we are started at 7 and multiplying by 3.

Our series would be:
7   21   63   189   567   1701

If we add up those values, we have a total of 2,548.

8,400-6,400=xx/6,400anyways the percent increase is 31.25% or 0.3125 you can round if you can