Evaluate each algebraic expression.
64-9p for p = 4, o, -3
-w + 8.5 for w = 12, -1.5, 5.3
46+ (-2k) for k = 3, 23, -2

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).

Ahigh school has 3636 players on the football team. the summary of the players' weights is given in the box plot. approximately, what is the percentage of players weighing less than or equal to 225225 pounds?

What expression is equivalent to 1/2(2+3x-6)