(28 points) In the drawing, a regular polygon is partially covered by a rectangle. what is the number of sides of this polygon? A: 6
B: 7
C: 8
D :60

Dean and karlene get paid to write songs. dean is paid a one-time fee of $20 plus $80 per day. karlene is paid a one-time fee of $25 plus $100 per day. write an expression to represent how much a producer will pay to hire both to work the same number of days on a song.