# exponential curve S0S

• July 13th 2008, 03:51 PM
tinycara
exponential curve S0S
Need help- greatly appreciate it!
Find an equation of an exponential curve that contains the points (3,85) and (7,13) . Show work and do not use the regression capabilities of your calculator. (The last part led to my demise) (Headbang)
• July 13th 2008, 03:56 PM
Mathstud28
Quote:

Originally Posted by tinycara
Need help- greatly appreciate it!
Find an equation of an exponential curve that contains the points (3,85) and (7,13) . Show work and do not use the regression capabilities of your calculator. (The last part led to my demise) (Headbang)

$f(x)=Ce^{bx}$

So we know that $85=Ce^{3b}$
and that $13=Ce^{7b}$

Now solve those simultaneously
• July 14th 2008, 07:21 AM
racersteve47
Same question
That same question was in my worksheet! I'm stuck on how to solve simultaneously how would you go about doing that?