Introduction to Sequences

Given f(n) = 3n, find the 8th term

Given f(n) = 5n + 6, find the 12th term

Given f(n) = n - 6, find the 102nd term

Given f(n) = -3n - 7, find the 21st term

Given the explicit rule:

f(n) = 3n

What is the position number of 42?

Given the explicit rule:
 $f\left(n\right)\ =\ \frac{n}{2}$  
What is the position number of 20?

Given the explicit rule:
 $f\left(n\right)\ =\ \frac{n}{3}+\ 9$  
What is the position number of 17?

Given the explicit rule:
 $f\left(n\right)\ =\ n^2$  
What is the position number of 49?

 $f\left(n\right)\ =\ 5\ +\ 5n$  Choose the first four terms of the sequence with the rule:

• 10, 15, 20, 25

• 10, 16, 22, 28

• 14, 18, 22, 26

• 15, 20, 25, 30

 $f\left(n\right)\ =\ -2\ +\ 3n$  Choose the first four terms of the sequence with the rule:

• 1, 4, 7, 10

• 3, 8, 13, 18

• 4, 9, 14, 19

• 4, 7, 10, 13