What is 19l?

-18
-9
9
18

What kind of bond pays interest which is exempt from tax?

The surface area of the triangular prism is .

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.