Please help ASAP with this question i've been going at this for 2hrs my brains is going to explode ...

1. "The stopping distance of a car on dry asphalt can be modelled by the function d(s) = 0.006s^2, where d(s) is the stopping distance, in metres, and s is the speed of the car in kilometres per hour. The stopping distance for a car on wet asphalt can be modelled by the function d(s) = 0.009s^2. The stopping distance for a car on ice can be modelled by the function d(s)=o.o4s^s"

2. "Write a reasonable domain and range for each of the functions d(s)=0.006s^2, d(s)=0.009s^2, and d(s)=0.04s^2"