Geometric Sequence_ Explicit Formula

Geometric Sequence_ Explicit Formula

9th Grade

10 Qs

quiz-placeholder

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Geometric Sequence_ Explicit Formula

Geometric Sequence_ Explicit Formula

Assessment

Quiz

Mathematics

9th Grade

Easy

CCSS
HSF.LE.A.2

Standards-aligned

Created by

J Hill

Used 18+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the explicit formula for the sequence?


4, -20, 100, -500, ...

an=4(2)n1a_n=4\left(2\right)^{n-1}

an=4(5)n1a_n=4\left(-5\right)^{n-1}

an=3(5)n1a_n=3\left(-5\right)^{n-1}

an=3(2)n1a_n=3\left(2\right)^{n-1}

Tags

CCSS.HSF.LE.A.2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the explicit formula for the sequence?


-1, 2, -4, 8, ...

 an=12(2)n1a_n=-\frac{1}{2}\left(2\right)^{n-1} 

 an=14(2)n1a_n=-\frac{1}{4}\left(2\right)^{n-1} 

 an=2(12)n1a_n=-2\left(-\frac{1}{2}\right)^{n-1} 

 an=(2)n1a_n=-\left(-2\right)^{n-1} 

Tags

CCSS.HSF.LE.A.2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the explicit formula for the sequence?


2, 6, 18, 54, ...

 an=9(5)n1a_n=-9\left(-5\right)^{n-1} 

 an=10(5)n1a_n=-10\left(-5\right)^{n-1} 

 an=2(3)n1a_n=2\left(3\right)^{n-1} 

 an=2(3)n1a_n=2\left(-3\right)^{n-1} 

Tags

CCSS.HSF.LE.A.2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the explicit formula for the sequence?


-4, -8, -16, -32,...

 an=2(2)n1a_n=-2\left(2\right)^{n-1} 

 an=4(2)n1a_n=-4\left(2\right)^{n-1} 

 an=2n1a_n=-2^{n-1} 

 an=2(2)n1a_n=2\left(-2\right)^{n-1} 

Tags

CCSS.HSF.LE.A.2

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the explicit formula for the sequence?


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

 an=3(2)n1a_n=3\left(2\right)^{n-1} 

 an=3(2)n1a_n=-3\left(-2\right)^{n-1} 

 an=3(3)n1a_n=3\left(-3\right)^{n-1} 

 an=3(3)n1a_n=3\left(3\right)^{n-1} 

Tags

CCSS.HSF.LE.A.2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the explicit formula for the sequence?


192, 48, 12, 3, ...

 an=3(14)n1a_n=3\left(\frac{1}{4}\right)^{n-1} 

 an=3(4)n1a_n=3\left(4\right)^{n-1} 

 an=192(14)n1a_n=192\left(\frac{1}{4}\right)^{n-1} 

 an=192(4)n1a_n=192\left(4\right)^{n-1} 

Tags

CCSS.HSF.LE.A.2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the explicit formula for the sequence?


-2, -4, -8, -16,...

 an=(5)n1a_n=\left(-5\right)^{n-1} 

 an=(2)n1a_n=-\left(-2\right)^{n-1} 

 an=2(2)n1a_n=-2\left(2\right)^{n-1} 

 an=2(2)n1a_n=-2\left(-2\right)^{n-1} 

Tags

CCSS.HSF.LE.A.2

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