Hii I need the 7th and 8th question asap will mark brainliest 100% to who ever answers first and right thank you

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.

Using the figure below, select the two pairs of alternate interior angles. a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet