Population grows according to the equation , where k is a constant and t is measured in years. If the population doubles every 10 years, then the value of k is
(a) 0.069 (b) 0.200 (c) 0.301 (d) 3.322 (e) 5.000
Hello,Originally Posted by frozenflames
the growth of this population can be described by the equation:
where p is the actual amount, is the starting value.
Put in the values you know:
solve for k:
now you have to use a caculator or a logarthmic table.
that means that none of the given results seem to be right.
Hello, RichB.Originally Posted by Rich B.
of course you are right - BUT. when frozenflames referred to the equation I was not aware, that the equation was meant which you used. It all depends on the base you choose for solving this problem. I have choosen for 10 and thats why I came up with a "wrong" result.
Have a nice day too.
In fact it does not matter (in principle) what you take forOriginally Posted by earboth
(as long as it is positive ) in a growth equation of the form:
Here there is a good case for using 2 since we are discussing doubling
times, so here it might be natural to use: