A population is modeled by dPdt=0.04P(1−P/500)\frac{dP}{dt} = 0.04P(1 - P/500)dtdP=0.04P(1−P/500). What is the growth rate when P=250P=250P=250?
555 units/time
101010 units/time
252525 units/time
0.040.040.04 units/time