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!
