The number of girls, g in a room is four more than two times the number of boys, b. half of the number of girls in the room minus the number of boys is 2.

Steve is scuba diving near his home in maui. at one point he is 100 feet below the surface. represent this number with a negative number. if he descends another 5 feet, what negative number will represents his.

I’m really confused and need to learn this

Factor this polynomial completely. x^2-8x+12