I need help worth 25 points please help

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

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?