Evaluate. 9^2 • ( 1/3) ^2 - 9 A) 1/9 B) 0 C) 1 D) 9 if right brainest

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Find a third-degree polynomial equation with rational coefficients that has roots -2 and 6+i

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p.s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)