Answer:
$5,100
Step-by-step explanation:
Intangible assets are amortized using the straight line method. Originally the amortization was $3,600 per year (= $18,000 / 5). During the first half of 2017, the company had amortized $1,800, and book value was $9,000 for the next 2.5 years.
On July 1st, the legal fees must be added to the book value = $9,000 + $7,500 = $16,500. The new amortization value is $6,600 per year (for 2018 and 2019) and $3,300 for the remaining half year of 2017.
The total amortization for 2017 = $1,800 + $3,300 = $5,100