Question 946589
You said that your deer population follows the Malthusian exponential growth model, which should be the same as continuous exponential growth model as discussed here:

<a href="http://en.wikipedia.org/wiki/Malthusian_growth_model">http://en.wikipedia.org/wiki/Malthusian_growth_model</a>


According to that and your notation,
{{{highlight_green(N(t)=N[o]e^(rt))}}}
;
and you have variable assignments, {{{r=0.4}}}, {{{N[o]=50}}}.


How many deer will be added to the population during the first year, for full {{{t=1}}}?


This would be {{{N(1)-N[o]=N(1)-50}}}
{{{50*e^(0.4*1)-50}}}
{{{highlight(50*e^(0.4)-50)}}}, just basic (maybe a little intermediate) algebra up to this far.   Using the software calculator in Windows, added 25 deer, to the nearest whole number.