12-1 HOMEWORK

Find the next three terms:

5, 8, 11, 14...

• 16, 19, 22

• 17, 19, 21

• 17, 20, 23

• 16, 18, 20

Answer explanation

ADD 3

What is the next term in the series? 15, 35, 55...

• 55

• 15

• 32

• 75

Answer explanation

ADD 20

What is the 7th term in the series? 15, 35, 55...

• 155

• 135

• 132

• 75

Answer explanation

ADD 20 four times

List the next three terms of the following sequence:

10, 13, 16, .....

• 20, 25, 31, .....

• 18, 20, 22, .....

• 19, 22, 25, ...

• 22, 25, 28, ......

Answer explanation

ADD 3

A formula that requires the computation of all previous terms to find the value of a_n.

• Explicit Formula

• Recursive Formula

What is the 15th term of the sequence a_n = -3n+50

• 95

• -5

• 5

• -95

Answer explanation

-3(15) + 50 = 5

Which of the following equations is explicit?

• a_n = 4n + 5

• a_n = a_n-1 x 5

Answer explanation

Recursive formulas use the previous term

Explicit formulas allow you to find any term without finding other terms

Which of the following equations is recursive?

• a_n = a_n-1 +4

• f(n) = 2n - 5

Answer explanation

Recursive formulas use the previous term

Explicit formulas allow you to find any term without finding other terms

What does a₁ represent?

• Any term

• First term

• Last term

Find $a_4$  for the sequence 2, 9, 16, 23, 30,...

• 16

• 23

• 4

• 30