I'll mark

write the equation of a line that is perpendicular to the given line and that passes through the given point.

y-2= 7/3(x+5) ; (-5, 2)

a: y+2= -3/7 (x-5)
b: y-5= -3/7(x+2)
c: y-2= -3/7(x+5)
d: y+2= 3/7(x-5)

a:

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels