A man deposited $ 800 in his account at a bank which offers 6% simple interest per annum. How much interest would he receive on $800 after 9 months?

Can someone me do math because i am having a breakdown rn because i don’t get it

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost

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.