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Algebra II Exercise: Geometric Sequences


Question Group #1
Directions and/or Common Information: 
Use an = a1rn-1 to write a rule for the following series.


2, 6, 18, 54, 162…
1. 





4, 6, 9, 13.5, 20.25…
2. 





0.5, -1, 2, -1, 8…
3. 





40, 14.8, 5.476, 2.02612…
4. 





40, -14.8, 5.476, -2.02612…
5. 




Question Group #2
Directions and/or Common Information: Use the following information to write the rule for the geometric sequence.


a6 = 18750
r = 5
1. 





a6 = 3
r = 1/2
2. 





a9 = 472392
r = 3
3. 





a6 = 15625
r = -5
4. 




Question Group #3
Directions and/or Common Information: Use the following information to write the rule for the geometric sequence.


a12 = 20480
a9 = 5120
1. 





a10 = 98415
a13 = 2657205
2. 





a6 = 54432
a9 = 11757312
3. 








B Horn

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