0.3*(10k^0.4)=(0.01+0.05)k... 3K^0.4=0.06k... k^0.4=0.02k... 0.4*log(k) =log(0.02k)=log(k)+log(.02)... 0.4log(k) -log(k)=log(0.02)... 0.6log(k)=log(0.02)=-1.698970004... log(k)=-1.698970004/0.6 =-2.831616674... k=invers log(-2.831616674) thats 10^-2.83.... k=0.0014736126...