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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?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Hurry which expression is equivalent to 3√x^5y?