Homework Help: calculus

Posted by marlyn on Saturday, December 5, 2009 at 11:49am.

because of a slump in the economy, a company finds thatr its annual revenue have dropped from $724,000 in 2006 to $632,000 in 2008. if the revenue is following an exponential ppattern of decline, what is the expected revenue for 2009? (Let t=0 represent 2006.)

calculus - bobpursley, Saturday, December 5, 2009 at 12:01pm
revenue=last year*e^kt

solve for k (given t=2, and the figures above.

k2=ln(632/724)

I get k to be-.0680

Now solve for 2009
revenue=reventue2006 * e^(-.0680t) where t is three years.

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