There are 40 nickels in every standard coin roll. that is the constant of proportionality?

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Why do interests rates on loans to be lower in a weak economy than in a strong one

Sum is 17 and their difference is 3