Given B$($t$)=33\mathrm{.}5(1\mathrm{.}005)^$t$,$ a model that represents the millions of people in Canada after t years, and C$($t$)=62/(1+$e$^(-0\mathrm{.}02$t$))$ is another model that represents the millions of people in Canada after t years, what are the values for B$\text{'}(75)$ and C$\text{'}(75)?$ Compare and interpret, in context, these values.