Sequences and Summation Notation

Evaluate: #42

Determine the sum of the series. #43

• 144

• 180

• 176

• 68

-21, -16, -11, -6, ...

Is this sequence arithmetic, geometric, or neither? #1

• arithmetic (common difference d = 5)

• geometric (common ratio r = 5)

• neither

This summation is the same as which series? #2

• (1/4) + (1/5) + (1/6) + (1/7) + ...

• 4+5+6+7+8+...

• (1/4) + (2/4) + (3/4) + (4/4) + (5/4) + (6/4) + ...

The next term of the sequence 2,4,8,16 is #3

• 64

• 32

• 108

• 20

What is the answer? #4

• 20

• 40

• 2!

• 3!

256, 128, 64, 32, ...

What's next? #5

• 24

• 18

• 16

• 8

Each individual number in a sequence of numbers is called what? #6

• Common difference

• Successive term

• Term

• Geometric term

Write the first five terms of the sequence. #7

t_n= 9 − 3n

• 6, 3, 0, -3, -6

• 9, 12, 15, 18, 21

• 9, 18, 27, 36, 45

• I need tutoring

Given a_n = 3(2)^{(n-1),       what are the first 4 terms?}

• 6, 12, 24, 48

• 3, 6, 12, 24

• 6, 18, 54, 112

• 18, 54, 112, 336