Find the missing angle measures in this rhombus

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).

Consider the function f(x)=-5x+3 what is f(-2)

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?