Simplify the expression. 19m – 4m2 + 4m2

The chart below shows the distribution of weeds in yard

The heaviest 16% of all men in weight weigh more than how many pounds ?

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?