Find the surface area of the pyramid to the nearest whole number.
) 400 in^2
b) 402 in^2
c) 404 in^2
d) 408 in^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).

If jaime wants to find 60% of 320, which table should he use?

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2