Question

Find an explicit rule for the nth term of the sequence. -1, -2, -4, -8, ...

Answer 1

divide by 2

Explanation:

-8 / 2 = -4

-4 / 2 = -2

-2 / 2 = -1

Answer 2

multiply by 2

Explanation:

-1 x 2 = -2

-2 x 2 = -4

-4 x 2 = -8

This means:

-2048 x 2 = -4096