How do I solve this problem 4×5-10÷(2+8)

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

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.

Hello, i need compare km^2 and km. what's difference in this?