Sequences - Explicit Formulas

Write the explicit formula for the sequence.

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

• $a_n=9+5\left(n-1\right)$

• $a_n=9-4\left(n-1\right)$

• $a_n=4+9\left(n-1\right)$

• $a_n=9\cdot4^{\left(n-1\right)}$

Tags

CCSS.HSF.BF.A.2

Write the explicit formula for the sequence.

216, 72, 24, 8, ...

• $a_n=216\cdot\left(\frac{1}{3}\right)^{\left(n-1\right)}$

• $a_n=8\cdot3^{\left(n-1\right)}$

• $a_n=216-144\left(n-1\right)$

• $a_n=216\cdot3^{\left(n-1\right)}$

Tags

CCSS.HSF.BF.A.2

Write the explicit formula for the sequence.

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

• $a_n=15+22\left(n-1\right)$

• $a_n=15\cdot7^{\left(n-1\right)}$

• $a_n=15+7\left(n-1\right)$

• $a_n=29-14^{\left(n-1\right)}$

Tags

CCSS.HSF.BF.A.2

Write the explicit formula for the sequence.

7, 28, 112, 448, ...

• $a_n=7+4\left(n-1\right)$

• $a_n=7\cdot4^{\left(n-1\right)}$

• $a_n=\frac{448}{4n}$

• $a_n=28+84\left(n-1\right)$

Tags

CCSS.HSF.LE.A.2

Write the explicit formula for the sequence.

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

• $a_n=10\cdot\left(-\frac{1}{5}\right)^{\left(n-1\right)}$

• $a_n=-2\cdot7^{\left(n-1\right)}$

• $a_n=10-8\left(n-1\right)$

• $a_n=10-12\left(n-1\right)$

Tags

CCSS.HSF.BF.A.2

Determine if the following sequence is arithmetic or geometric.

6, 30, 150, 750, ...

• Arithmetic

• Geometric

Tags

CCSS.HSF.BF.A.2

Determine if the following sequence is arithmetic or geometric.

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

• Arithmetic

• Geometric

Tags

CCSS.HSF.BF.A.2

Determine if the following sequence is arithmetic or geometric.

80, 20, 5, 1.25, ...

• Arithmetic

• Geometric

Tags

CCSS.HSF.BF.A.2

Determine if the following sequence is arithmetic or geometric.

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

• Arithmetic

• Geometric

Tags

CCSS.HSF.BF.A.2

Determine if the following sequence is arithmetic or geometric.

1, 7, 13, 19, ...

• Arithmetic

• Geometric

Tags

CCSS.HSF.BF.A.2