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 Post subject: Can you solve this answer in 2 min?Posted: Sun Nov 06, 2011 11:08 am

Joined: Thu Sep 08, 2011 5:42 pm
Posts: 2
I imported a coffee problem that I could not solve in two minutes...can anyone do it?

 Attachments: coffee problem.JPG [ 31.23 KB | Viewed 1442 times ]
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 Post subject: Re: Can you solve this answer in 2 min?Posted: Wed Nov 09, 2011 7:06 pm

Joined: Thu Feb 12, 2009 6:32 pm
Posts: 497
F = 120(2^(-at)) + 60

120 = 120(2^(-a10)) + 60

2= 2(2^(-a10)) + 1

1 = 2(2^(-a10))

1/2 = 2^(-a10)

2^(-1) = 2^(-a10)

-1 = -10a

a = 1/10

F = 120(2^(-(1/10)(30)) + 60

F = 120(2^(-3)) + 60

F = 120(1/8) + 60

F = 75

- Veritas Help

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