what is the final amount/ maturity value of $18,800 due in 36 months at 8% simple interest?

Final amount = original amount + interest
-F: final value
-P: present value
-r: interest rate (per year)
-t: time in years
F = P * (1 + r * t )
F = 18800 (1+0.08(3)) = $ 23,312.