Question

Using a table of differences if necessary calculate the rule for the nth term of the sequence 8,24,58,116,204.

I need urgent help on how to solve this please somebody.

Answer 1

Answer:

Step-by-step explanation:

a = 8

d = 16

an= 204

an= a+ (n-1)d

204 = 8 + 16n -16

212 = 16n

n = 13.25

(this cant be possible)

Answer 2

Answer:

$Un = n^{3} + 3n + 4$