What is the value of the double variable x after each of the following statements is executed?

a) x = Math.Abs(7.5);

b) x = Math.Floor(7.5);

c) x = Math.Abs(0.0);

d) x = Math.Ceiling(0.0);

e) x = Math.Abs(-6.4);

f) x = Math.Ceiling(-6.4);

g) x = Math.Ceiling(-Math.Abs(-8 + Math.Floor(-5.5)));