Solve 3 + 4x > -5 for x

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).

In angle pqr find the measure of

The function f(x) = 14,600(1.1)* represents the population of a town x years after it was established. what was the original population of the town?