Danny wants to promote his new business. He gave out a free pen to every fourth customer and a free pad of paper to every ninth customer. Which customer will be the first to receive both a pen and pad of paper?

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?