Unit 1 Test Review

Identify this type of sequence: 5,9,13,17,21

• arithmetic

• geometric

• neither

Answer explanation

The sequence is arithmetic because there is a common difference of 4 between each of the terms.

Write the recursive rule for the given sequence

This sequence is a(n)...

• Arithmetic Sequence with a common difference of 5

• Arithmetic Sequence with a common ratio of 5

• Geometric Sequence with a common difference of 5

• Geometric Sequence with a common ratio of 5

a3 =

• 14

• 2

• 3

• 8

a3 =

• 14

• 2

• 3

• 8

Is this graph Arithmetic or Geometric?

• Arithmetic

• Geometric

Define arithmetic sequences.

• A sequence whose terms change by adding the same number each time.

• A sequence whose terms change by multiplying the same number each time.

• A sequence whose terms change by dividing the same number each time.

• A list of numbers that often (but not always) form a pattern.

What is the common ratio or difference of the sequence: 6, 18, 54, 162, 486

• d=12

• r=36

• r=4

• d=6

A school is trying to raise money for a track team. They decide to have a walkathon. For each lap the track team walks, Dunkin' Donuts has decided to triple their donation and starts at $1 for the first lap. Starbucks decided to look better and donate $20 per lap. Which brand uses a GEOMETRIC sequence?

• Starbucks

• Dunkin' Donuts

Which two equations could represent this sequence: 3, 6, 12, ...

• f(n)=3*2n

• f(n)=3*2^n-1

• f(n)=f(n-1)*2, f(1)=3

• f(n)=f(n-1)+3, f(1)=3