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Can I get a math check?

Posted by David (aka David) Mar 15 '20, 22:01

100 at 10 percent growth is what after 10 days?
100 at 50 percent growth is what after 10 days?

Responses:

100 * (1.1^10) = 259.3, 100 * (1.5^10) = 5766.5 -- nm* - Strongbad Mar 16, 04:13
100+10=110+11=121+12=132+13=145+15=160+16=176 +18 ETC -- nm* - zeitgeist Mar 15, 22:18 2
- 121 + 12 = 133 -- nm - Peglegpete Mar 15, 22:26 1
  - and that's why the space probe crashed into the moon instead of landing softly, oh well, its just a billion or two -- nm - zeitgeist Mar 15, 22:32
100 * 0.1 / 365 * 10 = 0.27 + 100 = 100.27 - gort Mar 15, 22:06 2
- I was thinking of interest -- nm - gort Mar 15, 22:07 1
  - I probably could have worded it better. I apologize for that and thank you for helping. -- nm - David Mar 15, 22:08
assuming those percents are per day, and 100 is the day 0 figure (so ten solid days of increase, not starting on day 1, ending day 10). - mafic Mar 15, 22:05 7
- Perfect, thanks. It's 1 am, and I can't be wrong about health calculations. -- nm - David Mar 15, 22:07 6
  - (This is the number of infected at 10 percent growth vs. 50 percent growth after 10 days.) -- nm - David Mar 15, 22:08 5
    - By my calcs, at 50 percent growth rate, all Americans would have COVID-19 on day 37. It's day 158 at 10 percent. -- nm* - David Mar 15, 22:13 4
      - it's more complicated (and most likely slower) than those. what you need here is some Gaussian process regression! - mafic Mar 15, 22:27 2
        
        Oh, I'm aware, but I'm just having to explain the concept of flattening the curve right now. - David Mar 15, 22:43
        
        and dead people can't transmit anymore -- nm - zeitgeist Mar 15, 22:34
      - And I have the current rate over the last two days as 25% and 30%. - David Mar 15, 22:17

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Can I get a math check?

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