What is the volume of a sphere that has a diameter of 9 yd? use 3.14 to approximate pi and round the answer to two decimal places if necessary.
π yd3

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.