Marisa has 6 quarts and 2 cups of lemonade. she serves some of the lemonade. she has 2 quarts and 1 cup of lemonade left how many equations can be used to find the answer

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.