Answer:
The new price of the jacket is $42.28 (Approx)
Option (b) is correct .
Explanation:
As given
A jacket costs $72.90 before it is marked down 42%.
42% is written in the decimal form.

= 0.42
Than
Markdown price = 0.42 × $72.90
= $30.618
= $30.62 (Approx)
New price of the jacket = Original price - Markdown price
= $72.90 - $30.62
= $42.28 (Approx)
Therefore the new price of the jacket is $42.28 (Approx)
Option (b) is correct .