A forest covers 72,000 acres. A survey finds that 0.3% of the forest is old-growth trees. How many acres of old-growth trees are there?

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?