What are the answers to number 4 and 5? ?

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

Which one is the correct answer, and why?