The whole number 10 turn it to a fraction

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.

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?