A full grain silo with a capacity of 3000 cubic feet, empties at a constant rate of 3.5 cubic feet per second. Write an expression to determine the amount of grain left after s seconds.

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.