Evaluate 16-3b for b=4

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).

The system of equations graphed below has how many solutions? y = 2x + 2

Find all solutions for 2y - 4x =2 y = 2x + 1 site: socratic. org