The high school band is selling wrapping paper. it costs $4 each week to advertise the wrapping paper. the band buys each roll of wrapping paper for $2.00 and sells each one for $3.50. write an equation to model the amount of profit, p, the band makes from selling x rolls of wrapping paper in one week.  p = 2x − 4  p = 4x + 2  p = 3.5x − 2  p = 1.5x − 4