HELP WITH PRECALC DECIBELS QUESTION

Question

Formula given: dB=10log(I/Io) where Io is the intensity of a sound that can barely be perceived

Q: A cat's purr is 25 decibels. If the sound of a lion roaring can reach an intensity that is 790 000 000 more intense than the sound of a purring cat, what is the loudness of the lion's roar, to the nearest whole decibel?

THANK YOU SO MUCH

Answer 1

Lion loudness = 25 + 10 log (790 000 000 ) = , which rounds to 114