Anyone? match need it in a rush

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

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

Measure of angles 31 (x+4) (3x+9) me