Student purchased 7 binders for a total of $8.61. write or type an equation that can be used to find the cost of each binder, n , in dollars. what is the cost in dollars, of each binder?

To prove that def ~ gfh by the sss similarity theorem using the information provided in the diagram, it would be enough additional information to know that

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

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.