Answer:
n= 4
Step-by-step explanation:
-3-3(1+3n)= -42
-3-3-9n= -42
-6-9n= -42
+6 +6
-9n= -36
/-9 /-9
Answer:2
3
=12/4
the common ratio =3
729. multiple 9 times 9 then 81 times 9 and you get D
(12 + 8)/8 = 2.5
