Mr. and Mrs. Herczog retired on 80 percent of their pre-retirement earnings. If they are living on $35,000 per year, what was their pre-retirement income to the nearest dollar?

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?