What fraction is equivalent to 2/5 and has a denominator of 15

Asquare parking lot has 6,400 square meters what is the length in meters

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

Me n o w. i need t h i s. 10 points