the selling price pf an item is $520. it is marked down by 10%, but this sale price is still marked up from the cost of $360. find the markup from cost to the sale price.

When you answer this can you explain

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

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account