sal has already finished 5/9 of the 45 math problems he was assigned. if each math problem took him 3/5 of a minute to finish and this peace continues witch expression can be used to determine the amount of time it will take him to finish his remaining homework​

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.