Me answer this question. i do not understand how to do it.

Which statement accurately describes how to perform a 90° clockwise rotation of point a (1,4) around the origin?

Rewrite the polynomial -9x5 + 36x4 + 189x3 in factored form.

The function p(x) = –2(x – 9)2 + 100 is used to determine the profit on t-shirts sold for x dollars. what would the profit from sales be if the price of the t-shirts were $15 apiece?