Find the percent change from 200 to 192.

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

Which value would be a solution for x in the inequality 47-4x< 7

The table represents a function f(x). what is f(3)? a.-9 b.-1 c.1 d.9