Three pounds of oranges are selling for $2.79 what is the cost per pound

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 rational number could be graphed between -4 and -5

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?