Is 7 a solution to the compound inequality

Use set builder notation to represent the following set: { -3, -2, -1, 0}

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Jermaine has t subway tokens. karen has 4 more subway tokens than jermaine. raul has 5 fewer subway tokens than jermaine. which expression represents the ratio of karen's tokens to raul's tokens