Point P is located at -1−1. Points Q and R are each 1010 units away from Point P. Where are Q and R located?

I’m stuck on this equation, anyone got the answer?

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?

If two parallel lines are cut by a transversal, interior angles on the same side of the transversal are supplementary. a. always b. sometimes c. never