1. Arithmetic Sequences:
Example:
Geometric Sequences:
Tell whether each sequence is an arithmetic or geometric sequence.
A sequence formed by adding a fixed number to a term to find the next number (the fixed number is called the common difference)
A sequence formed by multiplying a term in the sequence by a fixed number to find the next term (the fixed number is called the common ratio)

2. Find the common ratio in each sequence.
Find the next three numbers.