Read the following information and answer the two items that follow.

let f(x) = x² + 2x $$-$$ 5

and g(x) = 5x + 30

Consider the following statements :

1. f[g(x)] is a polynomial of degree 3.

2. g[g(x)] is a polynomial of degree 2.

Which of the above statements is/are correct?

A function f defined by $$f(x) = \ln \left( {\sqrt {{x^2} + 1} - x} \right)$$ is

The domain of the function f defined by

f(x) = log_x 10 is

For r > 0, f(r) is the ratio of perimeter to area of a circle of radius r. Then, f(1) + f(2) is equal to