Question

Find an explicit rule for the nth term of the sequence. (2 points)

-4, -8, -16, -32, ...

an = -4 2n - 1
an = 2 • -4n + 1
an = 2 • -4n
an = -4 • 2n
4. Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are -12 and 768, respectively. (2 points)

an = 3 • (-4)n + 1
an = 3 • 4n - 1
an = 3 • (-4)n - 1
an = 3 • 4n