Simplify each expression involving signed numbers. -7 – 2 = 12 + (-4) = -8(-6) = StartFraction 18 over negative 3 EndFraction =

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).

Choose a second initial value that is 0.01 greater than the initial value from question 9. iterate it using the function, f, ten times. if necessary, you can round your results to the nearest ten-thousandth.

Which is the graph of f(x) = (4)x? image for option 1 image for option 2 image for option 3 image for option 4