/sci/ - Science & Math

Anonymous Tue Mar 3 13:58:31 2020 No.11437190 [View]
File: 15 KB, 846x268, geometric series p2.png [View same] [iqdb] [saucenao] [google]

>>11437167
>>11437165
Thank you two so much!

Now I'm absolutely lost, I know I have to use the a/(1-r) to find the sum of the series.
I don't exactly know how to find the following:
(a) and (r).
Do I plug in the inequality (15 > x > 1) into r? How do I find (a) in something like this?

I'm looking at the online textbook solutions but they didn't go over this so I'm super lost...

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/sci/ - Science & Math

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