Draw the graph of a function that has these key features: positive on (4,∞) negative on (-∞,4) increasing on (-∞,∞) approaches positive infinity as x approaches positive infinity

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?