What’s the tu form :Clean the house (limpiar)./la casa

How do u answer this ¿de dónde vienes?

Ive been trying to figure this out for a week now , you basically explain how to get to each place (bottom right) starting from starting point , pls i need 1-10 by monday

Achemist mixes 4 liters of one acid solution with 10 liters of a 40% solution, resulting in a 30% acid solution. what is the value of x, the acid concentration of the first solution