Composition of functions

When h is defined by $$h\left(x\right)=\frac{1}{x+3}$$ . If h can be formed by the composition of the functions f and g such that h(x)=g(f(x)), which of the following could be used to define f and g. ​ ​

When h is defined by $$h\left(x\right)=\frac{1}{x}+3$$ . If h can be formed by the composition of the functions f and g such that h(x)=g(f(x)), which of the following could be used to define f and g. ​ ​

When h is defined by $$h\left(x\right)=x^2+9$$ . If h can be formed by the composition of the functions f and g such that h(x)=f(g(x)), which of the following could be used to define f and g

When h is defined by $$h\left(x\right)=\left(x+3\right)^2+6$$ . If h can be formed by the composition of the functions f and g such that h(x)=f(g(x)), which of the following could be used to define f and g

When h is defined by $$h\left(x\right)=x^2+9$$ . If h can be formed by the composition of the functions f and g such that h(x)=f(g(x)), which of the following could be used to define f and g

Which equations can combine to create the h(x) equation if h(x)=f(g(x))

Which equations can combine to create the h(x) equation if h(x)=f(g(x))

Which equations can combine to create the h(x) equation if h(x)=g(f(x))

Which equations can combine to create the h(x) equation if h(x)=g(f(x))

if h(x)=f(g(x)) and f(x)=x+3 and g(x)=x+2. Graph h(x)