What is the value of x? Explain and show the steps.
192x *4 = -5 (round to nearest tenth)

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).

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

What’s 8y+48 and factor each expression completely