Please help me to solve this problem, thank you.

The populationP, inthousands, of a small city is given by the followingfunction, where t is time in years. Answer parts a) through c).

P(t)=500t/ 3t^2 + 4

a) Find the growth rate.

The growth rate is ?

b) Find the population after 12 yr.

The population is after 12 years ?

(Round to the nearest integer asneeded.)

c) Find the growth rate at t= 12 years is ? residents/yr.

The growth rate at 12 years is ?

(Round to the nearest integer asneeded.)