4x + 11y = 7
4x + 3y = -1

Ineed to know the answer to this algebra question.

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.

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250