The price of an MP3 player was on sale for 20% off. Matt bought the MP3 player and it had a rebate of $50. How much did Matt pay for the MP3 player?

To do this problem first you would have to charge 20% into 0.20 after you do that you would do 0.20 x 50.00 and you would get 10 so 10 is how much you take off of 50 so then you do 10-50=40 so your answer would be that Matt would have to pay $40 for the MP3 player