HELP ME OUT PLS ILL GIVE BRAINLIEST Subtract the two polynomials:

(3x^5-2x^4-5x-5)-(2x^4+x^2-10)

a
3x^5-10x^2-5x+10

b
3x^4+x^2+15

c
3x^5-4x^4-x^2+5

d
3x^5-4x^4+x^2-15

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).

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