Neeed real help pls

Carl wants to buy a television that cost $500 including taxes. to pay for television he will use a payment plan that requires him to make a down payment of $125 and then pay $70.50 each month for six months what is the percent increase from the original cast of the television to the cost of the television using a payment plan.

Me what is the value of x? showing work would be appreciated - ! : )

Toyland is having a sale. all items are 20% off. how much will you save on an item that usually sells for 95$ explain your