Find the length of AD and XZ

The first hexagon is dilated to form the second hexagon select the answers from the drop box menus to correctly complete the statement

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.

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply