Answer:
21. An= 100 (2)^n-1
22. $51,200
23. n= 15
Step-by-step explanation:
21. 100, 200, 400, 800, 1600...
An= A r ^n-1
22. a10= 100(2)^10-1
a10= 100(2)^9
23. n=14
a14= 100(2)^14-1= 819200
n= 15
a15= 100(2)^15-1= 1638400
So, basically 2
2 * 1
- -
3 * 4
so 2 /12
1/6 when simplified
<span>The answer is 1/8 becase 3/8 divided by 3 equals 1/8
___________________________________________________________-xoCote♥
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