An art teacher needs to 5 boxes of markrrs to complete a project with a class of 20 students. how many boxes of markers will he need to buy for a class of 28 students?

Based on what i know about mean, this doesn't add up.

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

What is the arc length when θ =pi over 3 and the radius is 5 cm? (5 points) 5 pi over 3 cm 10 pi over 3 cm 16 pi over 3 cm pi over 3 cm