Formulas of a Sequence

Write the explicit formula for the sequence.

9, 5, 1, -3, ...

Write the explicit formula for the sequence.

216, 72, 24, 8, ...

Write the explicit formula for the sequence.

15, 22, 29, 36, 43, ...

Write the explicit formula for the sequence.

7, 28, 112, 448, ...

Write the explicit formula for the sequence.

10, -2, -14, -26, ...

Determine if the following sequence is arithmetic or geometric.

6, 30, 150, 750, ...

• Arithmetic

• Geometric

Determine if the following sequence is arithmetic or geometric.

2, 5, 8, 11, 14, ...

• Arithmetic

• Geometric

Determine if the following sequence is arithmetic or geometric.

80, 20, 5, 1.25, ...

• Arithmetic

• Geometric

Determine if the following sequence is arithmetic or geometric.

-3, -6, -12, -24, ...

• Arithmetic

• Geometric

Determine if the following sequence is arithmetic or geometric.

1, 7, 13, 19, ...

• Arithmetic

• Geometric