The relation shown in the graph is a function. true or false

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

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 many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.