Margot and Francois were doing their algebra homework when Margot's dog, Pepe, bit off a piece of the paper they were working on. All they had left was a part of the sequence: 6, 12, ... and the fact that 1536 was another term of the sequence. Assuming the sequence is arithmetic, what term number is 1536 ?

Assuming the sequence is geometric, what term number is 1536 ?

3 answers

https://www.jiskha.com/display.cgi?id=1519774403
that doesnt make sense
If arithmetic, you know that d=6 and a=6
a+(n-1)d = term(n)

6+(n-1)(6) = 1536
6 + 6n - 6 = 1536
6n = 1536
n = 256

If GP,then a=6, r=2

In the same way, use the definition of term(n) to solve the second part