Need help im gonna fail so plz don't guess ill give that brain thing or whatever

Use the quadratic formula to solve 5x=6x^2-3,what are the values of x?

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).

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?