PLEASE HELP FIND THE SLOPE OF THE LINE PLEASEEE

When you are making a circle graph by hand, how do you convert a number for a part into its corresponding angle measure in the circle graph? when you are making a circle graph by hand, what should you do if one of your angle measures is greater than 180°?

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

The distance between two points is 6.5cm and scale of map is 1: 1000 what's the distance between the two points