Aline with slope of -3/4 that passes through the point (-14,4)

Based on what i know about mean, this doesn't add up.

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).

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9