Jimmy went out to eat with friends. The bill without the tip came out to $45. Jimmy and his friends left an $8 tip. What percent tip did they leave their server. Round to the nearest whole percent. Please help I will give you brainliest I really need this​

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.