Question

1.
Which represents the first two terms of the sequence:
a_1 = 2 and a_n = -2(a_n-1)^2

option a. -8, -128
option b. 16, 1024
option c. -2, 16
option d. 2, -8


2.
Which is the seventh term in the sequence:
a_n = -1/125 * 5^n-1

option a. -125
option b. -625
option c. -25
option d. -5


3.
Which is the 10th term in the sequence:
-62, -47, -32, -17, -2, ...

option a. 58
option b. 88
option c. 73
option d. 12


4.
Which is the 14th term of the sequence:
1/81, 1/27, 1/9, 1/3, 1,...

option a. 2187
option b. 6561
option c. 19,683
option d. 59,049

Answer 1

#1,2 - just plug in a value for n

#3 Tn = -62 + 15(n-1) = -77+15n
#4 Tn = 1/243 * 3^n