Solve the system of equations using substitution.
y = 3x + 4
y = 5x

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

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?