An appliance store decreases the price of a 19-in. television set 16% to a sale price of $535.92. what was the original price?

621.67. First of all you want to convert the 16% to a .16 so you can multiply it. From then you can multiply 535.92 times .16 to find the amount of money that was taken off of the original price. The number you get from the previous equation you have to add to 535.92 to final original price.

100%-16%=84%(or 0.84) this tells you that $535.92 is 84% of the original price. 
Divide 535.92 by 0.84 to get $638

2.4+3.2t. you get the answer by adding the ones with variables and ones without