Mixed Practice! Find the Value of each variable

For the equations below which statement is true ? -2x=14 6x=-42

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?

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29