How do I answer this?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

What are the domain and range of the function f(x)=2^x+1

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.