Which series represents this situation? 1+1*7+1*7^ 2 +...1*7^ 6; 1+1*7+1*7^ 2 +...1*7^ 7; 7+1*7+1*7^ 2 +... 1*7^ 6; 7+1*7+1*7^ 2 +...1*7^ 7

Step-by-step explanation:

The series is missing from the question. I will answer this question with a general explanation by using the following similar series:

Required

The series

To do this, we simply replace n with the values

means n starts from 0 and ends at 6

means the series is a summation series

So, we have:

72 is the answer to this problem