Write the equation of a circle with a center at (15, –35) and a diameter of 100. (x – 15)2 + (y + 35)2 = 250 (x – 15)2 + (y + 35)2 = 50 (x – 15)2 + (y + 35)2 = 2500 (x – 15)2 + (y + 35)2 = 100