Please help fast, thanks! How do you determine if a ratio rate or percent is best to use in any given situation?

Two lines parallel to the same plane are parallel to eachother

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Someone answer this asap for the first five terms of a sequence are shown. 5, 11, 23, 47, 95, . . which recursive function defines the nth term in the sequence for n > 1? a. f(n) = f(n - 1) + 6 b) f(n) = f(n - 1) + 48 c) f(n) = 3 • f(n - 1) + 1 d) f(n) = 3 • f(n - 1) - 4