The original price of phone is $ 315.76
Solution:
Given that Mica bought a new smart phone for $ 258.13.
That was the price after his 18.25% discount
To find: original price of phone
From given question,
price after discount = $ 258.13
discount = 18.25 %
Let "x" be the original price of phone
price after discount = original price - discount




Thus original price of phone is $ 315.76