Lauren wolf purchased address at a 30% off sale. she paid $133 for the dress. let p represent the original price of the dress.

P = original price
                                               $133
0.70p = $133.  Find p:     p = = $190
                                               0.70

Here I've used 0.70 because 1.00-0.30 = 0.70.  "30% off" is equivalent to "100% - 70%".

Ithink it is correct but just ask someone else but i am sure it it