Recursive and Explicit Sequence Rules

In recursive formulas what does the term a_n-1 represent?

• the previous term

• the term you are looking for

• the first term

• the last term

In recursive formulas what does the term a₁ represent?

• the previous term

• the term you are looking for

• the first term

• the last term

Write a recursive formula for the sequence 17,13,9,5...

• a_n=a_n-1 - 4

• a_n=a_n-1 -17

• a_n=a_n-1 +4

Which sequence can be found using the recursive formula a₁=6, a_n= 4a_n-1, n>2

• 6,10,14,20...

• 2,6,10,14...

• 6,24,96,384...

• 6,12,18,24,...

• 4

• 1

• 18

• 114

• 24

• 7,776

• 48

• 96

Find the first four terms of the sequence.

a_n= 3(4)ⁿ

• 12, 48, 192, 768

• 12, 144, 1728, 20736

• 12, 24, 36, 48

• 3, 12, 48, 192

Write the recursive formula for 6, 17, 28, 39, 50....

• a_n=a_n-1+11
  a₁=6
• a_n=a_n-1-4
  a₁=6
• a_n=a_n-1+9
  a₁=6
• a_n=a_n-1+6
  a₁=6

• 16

• 23

• 4

• 30

Find the first four terms of the sequence.

a_n= 7(n + 2)

• 21, 28, 35, 42

• 7, 9, 11, 13

• 9, 16, 23, 30

• 16, 23, 30, 37