What is the amount of the tip given the amount of bill and the tip percent? bill: $109.66, tip percent: 15%

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.

According to the general equation for conditional probability if p(anb)=3/7 and p(b)=7/8 what is p(a i b)

Iknow the answer but the calculator doesn't seem to give the right one