Plz help ill make brainliest

In which form is the following function written? y = - 2(x – 3)(x + 5)

For a function f(x), a) if f(7) = 22 then f^-1(22) = b) f^-1(f(c)) =

Novak gives 9 packs of paper to a group of 5 students. if the group shares the paper equally how many packs of paper does each student get. write the a answer as a mixed number