The difference of 5 times a number and 3 times that same number is 16. Which of the following is the equation of the statement above?

5x - 3x = 16
5x + 3x = 16
5x - 3 = 16
5 - 3x = 16

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).

How do i solve uniform motion problems?

Plzzz answer both questions and i will give you 100 points