An = a1 * r^(n - 1)....where a1 is the first term and r is the common ratio
to find the common ratio, take ur 2nd term and divide it by ur first term
so ur common ratio is : 8 / -2 = -4....this is basically saying that to find ur next term, u multiply by -4.
so ur rule is : an = -2 * -4^(n - 1) <==
Answer:
I believe it is right, although i haven't really gone deep into that unit yet and I'm not sure if I am correct.
Step-by-step explanation:
If 6-2=4, than r=4. It is the simple process of knowing your facts.
G (x) = -11/4 ...
that's your answer