Write a number that is slightly less than one billionth

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 quartic functions has x = –1 and x = –2 as its only two real zeroes?

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,