On monday, there was no snow on the ground in buffalo, new york. on tuesday, three inches of snow fell. on wensday a half an inch of snow melted. on thursday two and a half more inches fell. on friday another inch and a half melted. how much snow was left on the ground friday night.

Ms. ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms. ortiz charge per kilogram of tomatoes to make on a load of tomatoes?