Answer and Explanation:
The amount and the journal entry is shown below:
a. Amortization Expense - Patents $35,000 ($315,000 ÷ 9 years)
To Patents $35,000
(Being amortization expense is recorded)
b Amortization Expense - Patent $2,600 ($46,800 ÷ 18 years)
To Patents $2,600
(Being amortization expense is recorded)
c Amortization Expense - Franchises $18,000 ($72,000 ÷ 4)
To Franchises $18,000
(Being amortization expense is recorded)