Determine f ^–1(15) for the relation f(x) defined by {(15,7), (20,12), (22,15), (25,20)}.

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?

Complete the solution of the equation. find the value of y when x equals -5. -4x - 8y = -52

If a is a nonzero real number then the reciprocal of a is