Which of the curves on the graph below indicate a function?

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?

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122