Find the perimeter of the figure

According to the number line, what is the distance between points a and b? v ++ + + + + -16 -14 -12 -10 -8 + 6 + 4 + -2 + 0 + 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 o6 units o 7 units 12 units o 14 units

Which function has the domain x> -11

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g