Ursula is entering a bicycle race for charity. her mother pledges $0.75 for every 0.5 mile she bikes. if ursula bikes 17.5 miles, how much will her mother donate?

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?