6-term geometric series if the first term is 6 and the last term is 1,000,842

Ageometric series is the summation of a geometric sequence, so formulas for geometric sequences will apply here.the general term  of a geometric sequence with  common difference  and first term  iswe want to create a 6 term geometric sequence (then we will sum up all the terms for it to be a series).we want six terms, so  . the first term is 6 so . the last term of 1000842 is the 6th term, so  . substitute these values into the above formula to find  .using this value of r will allow us to calculate each term in the sequence.so this geometric series would look like (rounded to 3 decimal places): if you want the sum of this 6-term geometric series: the sum of the first  terms of a geometric series with first term  and common ratio  is given byso using this formula with our information

Ive seen this before! the answer is b