Well the Regular Price is the price before the sale was added. So here's the work that I would put in and in the end, just divide by (1 - 0.38).
Price x (1 - 0.38) = Sale Price (529)
Price x 0.62 = 529
Price = 529 / 0.62 = 853.23
$853.23 was the Regular Price
Answer:
manefestation is a kind of magic .
Explanation:
The variable is the group that was given caffine, because thats what the doctors manipulated. They possibly altered the natural memory of the participants by giving them caffine. A more specific variable could be how much caffine each participant is given and what time are they given it.