O my gosh washer help pleasee! the black hoe that goes into the wall that thing is leaking bad :(?

and my sink is clogged up and then today i loook in my washer n its fillled with like dirty looking water?! what the heck dude lol but yea its beeen leaking for anwhile but it just recently got worse:/ n my whole pantry floor is wet and my sinks clogged and now my washer is filled with dirty water plz help me :/ n i live in a duplex if that matters