Which of the following is equal to √3 √5

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

What is the missing step in this proof ?

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?