Which of the following is the equation of a circle with a radius of 2.5 and its center at (-4, 3)? a. (x - 4)^2 + (y + 3)^2 = 2.5 b. (x + 4)^2 + (y - 3)^2 = 2.5 c. (x - 4)^2 + (y + 3)^2 = 6.25 d. (x + 4)^2 + (y -3)^2 = 6.25

The format for a circle is .  We are given our center of (-4, 3) where h is -4 and k is 3.  The radius of 2.5 will be squared to finish it off.  Filling in our h and k accordingly gives us .  Clean that up a bit and we have , choice D above.