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too many missing variables? (exponential problem)

Mag
in Homework Help

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i dunno how to get the fancy text stuff, so ill just write it out.

 

i have:

 

96.8 = 72 + 26.6 ^-k(t)

 

Dont i need to know at least K or T to find out one or the other?

Yes you do, but it may just be asking you to solve for k or t. For instance, you could subtract 72, take the log, and divide by -k to get

[math]T= -\frac{log_{26.6}(24.8)}{k}[/math]

If you want to get values for either you need another equation though.

  • Author

yeah, i need -k, so i can find out t.

 

(and how do you do the equation like that?)

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