Before leaving to mexico, levant traded 270 american dollars and received 3000 mexican pesos. when he returned from mexico, he had 100 pesos left. how much will he receive when he trades these pesos for dollars

Which is the first surface that has the potential to come into contact with solar radiation? a. icebergsb. cloudsc. the oceand. land

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )