At an amusement park, 21 out of 30 tickets sold were discount tickets. what percentage of the tickets were discount tickets?

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).

Me find the value of x each figure.

Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)