Question

In the Philippines, the COVID-19 cases drops from 386,000 in March, 2020 to 230,000 in July, 2020. If the cases is following an exponential pattern of decline, what is the expected cases in December, 2020?,

Answer 1

$x=ae^{kt}$

a,k- constants

$386000=ae^{k0}$

a=386000

$230000=386000e^{4k}$

$k=ln(230000/386000)/4=-0.129$

$x=386000e^{-0.129\cdot 9}=74112$