1. Given f(x)=x^2 and g(x)=(-7/x) find f(g(x)) and g(f(x))

2. Let f(x)=x+2 and g(x)= X^2-15, find f(g(4)) and g(f(4))

3. Let f(x)= (x-5/12), find f^-1(x)

4. Which of the following functions are one to one?

f(x)=|x+3|

g(x)=x^2

h(x)= sqrt(4-4x)

k(x)=x^3