When one person shouts at a football game, the sound intensity level at the center of the field is 60.9 dB. Wh

When one person shouts at a football game, the sound intensity level at the center of the field is 60.9 dB. When all the people shout together, the intensity level increases to 85.7 dB. Assuming that each person generates the same sound intensity at the center of the field, how many people are at the game?

A: __________

10*log(N/1)=85.7-60.9

N=302