Question 9 5 Last month deer population is 250. If the instantaneous growth rate (r) is 20% and the carrying capacity of the deer population is 1000, find the this month's change of deer population (consider time interval is one month). O 0.2 *(1-250/1000)*250 O 0.2 *(1-250/1000) O (1-250/1000)*20/100 None of these Answers Question 10 5 Radium-226 has a continuous decay rate of about 0.0427869% per year. Determine its half-life in whole years. O In(1/2) / (-0.0427869/100) In(0.5) / (-0.0427869) O -In(0.5) / (0.00427869) O None of these Answers