Property a initially sold for $412,500. the property sold a second time 12 months later for $430,500. what was a's monthly rate of change? (round the final calculation to four decimal places.)

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?