Please solve
3(y+2)=14
I can't find the answer

Solve the system of equations. y= 2x y= x^2 - 15

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

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16