Geometric Sequence from a Pattern

What kind of sequence is the pattern 400, 200, 100, 50, 25, ...?

• Arithmetic

• Geometric

• Neither

Carey is organizing her books and putting them on shelves. She put 2 books on the first shelf, 8 books on the second shelf, 32 books on the third shelf, and 128 books on the fourth shelf. What kind of sequence is this?

• Geometric

• Arithmetic

• Both

• Neither

What is the common ratio for the sequence:
28, -14, 7, -3.5...

• 1/2 (or 0.5)

• - 1/2 (or -0.5)

• -14

• -7

Find the common ratio of the geometric sequence:      -2, -4, -8, -16, . . . 

• -2

• 2

• 4

• -4

The "a" value in f(x)=a(b)^x for geometric sequences represents what?

• first term

• term we're looking for, minus one

• common difference

• common ratio

Is the sequence-4, -12, -36, -108,... arithmetic geometric, or neither?

• arithmetic

• geometric

• neither

Find the next term:

81, 9, 1, 1/9, ...

• 1/81

• 1/27

• 1/18

• 18

Which kind of sequence has a common ratio?

• Arithmetic

• Geometric

A _____________sequence is a sequence of numbers in which the ratio between any two consecutive terms is a constant. 

• Geometric Sequence

• Arithmentic Sequence

The next term of the sequence 2,4,8,16 are

• 64

• 32

• 108

• 20