The initial cost for Travis and his band to record their first CD was $1500. Each CD will cost $4 to produce. If they sell their CDs for $10 each, how many must they sell before they make profit?
C=1500+4x where x is cds, C is cost R=10x where R is revenue then, P=R-C P=10x-1500-4x P=6x-1500 set P=0 1500=6x x=250 check, C=1500+4*250, R=10*250 C=250, R=250 They need to sell 250 cds before they make profit
