Can someone help i need it anything will help :)

In the football stadium, there are 18 empty seats out of 360 total seats. (1a) write the ratio of empty seats to total seats as a fraction in simplest form. (1b) then explain its meaning.

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply