Use the unit circle and the reference angle to determine which of the followimg trigonometric values is correct when o= 135 degrees

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 type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

What is the equation of a line passing through (-6,5) and having a slope of 1/3