the question isn't understandable.
can you post the picture of question instead?
rounding to the nearest thousandth would be 452,000
wholesale price is the initial price before markup. retail price comes after the markup.
a price of 8 bucks that's marked up by 100% is
formula: initial price + (percent markup in fraction/decimal)(initial price)
8+(1)(8)
8+8
16
retail price is $16.