Please help need help bad

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?

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with

There are 93 calories in a small candy bar how many calories are ther in a half dozen small candy bars?