The sodium ion in sodium chloride has lost one electron. how do you write the chemical symbol for the sodium plz

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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.

Solve this problem! extra ! 3025/5.5 = a/90.75