For the point P(12, - 19) and Q(17, - 16), find the distance d(P, Q) and the coordinates of the midpoint M of the segment PQ.

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Which statement best explains why ben uses the width hi to create the arc at j from point k

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.