Geometric & Arithmetic Sequences

What is the common difference of the sequence below? 6, 9, 12, 15, ... Hint: Common difference means the ADDING pattern

• 3

• 6

• 9

• 12

What is the first term of the sequence below?

• 3

• 6

• 9

• 12

• 530

• 685

• 755

• 820

Write an explicit formula for the sequence 45, 40, 35, 30, ...

Write an explicit formula for the sequence 1.5, 2.0, 2.5, 3.0, ...

Write an explicit formula for the sequence -9, -7, -5, -3, ...

Arithmetic sequences form a linear equation. Geometric sequences form an exponential equation. Given the geometric sequence 2, 6, 18, ..., write an explicit formula.

Given the geometric sequence 1, 5, 25, 125, ..., write an explicit formula.

Given the geometric sequence 64, 16, 4, 1, ..., write an explicit formula.