the number of twitter followers that marry has triples each month. if she has 8 followers today, how many will?
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01-16-2013, 09:40 AM
Post: #1
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the number of twitter followers that marry has triples each month. if she has 8 followers today, how many will?
the number of twitter followers that marry has triples each month. if she has 8 followers today, how many will she have in a year?
thanks:] Ads |
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01-16-2013, 09:45 AM
Post: #2
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she will have 2,125,760 followers in a year.
you just have to start out with 8 followers and watch as it triples each month and then add those flowers. i.e. 8+24+72+216+648...and so on and so on Ads |
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01-16-2013, 09:52 AM
Post: #3
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Suppose Mary's followers triple every month.
After 0 months, she has 8(3)^0 = 8 followers. After 1 month, she has 8(3)^1 = 24 followers. After 2 months, she has 8(3)^2 = 72 followers. In general, after k months, she has 8(3)^k followers. So after 1 year (or 12 months), Mary has 8(3)^12 = 4,251,528 followers. |
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