The sum of the first 7 terms of a geometric sequence is 16383.
the common ratio is 4. what is the fourth term of the sequence?
the fourth term is
(a)12
(b)48
(c)152
d.769

UNFINISHED ANSWER - PRESSED ENTER TOO EARLY. SORRY

-1/2=3/2k+3/2

Rewrite the equation to have k on left side

3/2k+3/2=-1/2

Simplify 3/2k

3k/2+3/2=12

Move all terms not containing k to right side

3k/2=1/2-3/2

3k/2=-2

Multiply both sifmdes by 2

2(3k/2)=-2(2)

3k=-4

Divide both sides by 3 to get k alone

3k/3=-4/3

K= -4/3