Second time asking

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What can you determine about the solutions of this system

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

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.