Question

PLEASE EXPLAIN :3
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Question 5
Find an equation for the nth term of the sequence.

-3, -12, -48, -192, ...
a.an = 4 • -3n + 1
b.an = -3 • 4n - 1
c.an = -3 • 4n
d.an = 4 • -3n

Question 6
Find an equation for the nth term of a geometric sequence where the second and fifth terms are -21 and 567, respectively.
a.an = 7 • (-3)n + 1
b.an = 7 • 3n - 1
c.an = 7 • (-3)n - 1
d.an = 7 • 3n

Answer 1

ur options are not much clear and confusing like
whether is it 7 . 3( n - 1 ) OR 7 . 3n -1

Answer 2

if u want to find them just put n = 1 , 2 , 3..in the options and check whether is it correct or not