Amachine can reduce 21 inches of ribbon every 3 minutes. how many feet of ribbon can the machine make in one hour?

Average salary for a medical assistant is $31,220 which is a 20% income tax bracket how much money would they pay in income tax?

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).

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29