How to convert degrees minutes seconds to decimal degrees by hand?

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

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 graph represents the linear function below? y-3=1/2(x+2)