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What do you think is the best first step?
Hey Eraser147. Try collecting the 10^(t) terms to one side and then use the relationship that log_10(10^t) = t where log_10(x) = log(x)/log(10) where log(x) is the natural logarithm.
I ended up with $\displaystyle 10^t+1=.8*10^t+1.6$. I don't know where to go from there.
10^(t) - 0.8*10^(t) = 1.6 - 1 which means 0.2*10^(t) = 0.6 which means 10^(t) = 0.6/0.2 = 3.
Oh... THANKS A BUNCH. My error was not realizing I should subtract the 0.8*10^(t)
Originally Posted by Eraser147 I find this whole thread off. $\displaystyle 10^t+7.9=1.1(10^t)+7.7$ $\displaystyle 0.1(10^t)=0.2$ $\displaystyle 10^t=2$ $\displaystyle t=\log_{10}(2)$
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