The length of a rectangular kitchen floor is 8 feet longer than w, its width. Which expression represents the area of the floor? (2w+16) square feet
(4w+16) square feet
(W^2+8) square feet
(W^2+8w) square feet

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).

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.