Question

3. Find an equation for the nth term of the sequence.
-3, -12, -48, -192,
an = 4 • -3n + 1
an = -3 • 4n - 1
an = -3 • 4n
an = 4 • -3n

Answer 1

a=3
\[r=\frac{ -12 }{ -3 }=4\]
\[a _{n}=ar ^{n-1}\]

Answer 2

correction a=-3

Answer 3

@surjithayer an = -3 • 4n - 1

Answer 4

correct.
\[a _{n}=-3*4^{n-1}\]

Answer 5

@surjithayer thank u so much