Who wants to talk about school? wink wink

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

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

Which of the following statement about pascal's triangle are true?