Write a situation in which positive and negative numbers are used to describe values that have opposite meaning. what does 0 represent in this situation you created?

Which of the binomials below is a factor of this trinominal? x^2-13+30

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made. determine an equation to model his situation?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?