Number 22 - answer is B because of proportion rules. Number 23 - answer is A because you have to square root the distance (number 22) and power it to the -1. So, the answer 1/4. Number 24 - answer is A because the equation of the circle is (x - h)^2 + (y - k)^2 = r^2, where (h, k) is the center of the circle. So, let's rewrite the equation: (x^2 + 4x) + (y^2 - 2y) = -1 (x^2 + 4x + 4 - 4) + (y^2 - 2y + 1 - 1) = -1 (x^2 + 4x + 4) + (y^2 - 2y +1) = -1 + 4 + 1 (x + 2)^2 + (y - 1)^2 = 2^2 So, the radius is 2. Hope it helps! Good luck!
