Find the slope of the line that passes through these points (2,5) (4,1)

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 of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

What value of x is in the solution set of 4x – 12 s 16 + 8x?