Question

any formulas to plug this problem in? I don't know at all how to do these. HELP! Write the first four terms of the geometric sequence in which a1 = -3 and r = -4

Answer 1

was term of a geometric sequence is simply r times the last term

Answer 2

\[a_n=a_{n-1}~r~:~a_1=k\]

Answer 3

\[a_1=k\]
\[a_2 = k~r\]
\[a_3 = k~r~r\]
\[a_4 = k~r~r~r\]
\[a_n = k~r^{n-1}\]

Answer 4

k thank you i got thanks!!!
-3, 12, -48, 192