Select the three situations that model a sum of zero.

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

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?