Answer:
he World Health Organization (WHO) defines noise above 65 decibels (dB) as noise pollution. To be precise, noise becomes harmful when it exceeds 75 decibels (dB) and is painful above 120 db.
Explanation:
A=2
5a^4
(5*2)^4
10^4
10,000 - you were correct.
your answer is D hope this helps and please tell me if im wrong