Answer:
see explanation
Step-by-step explanation:
Given the recursive formula = and
= 2 = , then
= ( multiply both sides by 4 )
a₃ = 4 × = 9
= 9 ( multiply both sides by 4 )
a₂ = 36
= 36 ( multiply both sides by 4 )
a₁ = 144
The first 4 terms are
144, 36, 9, 2
C
generate the first few terms using the recursive formula
= - 7 × = -
= - × = -
r = / =
the n th term formula (explicit ) for a geometric sequence is
= = - 7()^(n - 1)
Answer: x= 50