If f(x) = x² + 2 and g(x) = 2x - 3, then what is (fog)(1) equal to ?

What is the range of the function f(x) = x + |x| if the domain is the set of real numbers ?  

If f(x) = x(4x² - 3), then what is f(sinθ) equal to ?  

What is $\lim\limits_{x \rightarrow 5} \frac{5-x}{|x-5|}$ equal to ?