Peter bought 45 sheets of plywood at a total cost of $400. He plans to sell each sheet for $15. If Peter has no other expenses, what is the fewest number of sheets he must sell to make a profit?

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

Need on this geometry question. explain how you did it.

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?