Can someone please help me to explain it. Please write down in a neat writing, so that I understand it.

This is calculus 1.

4. Suppose that f(x) = - and g(x) = 1 1 - 3x a) Simplify (go f) (x) [= 9(f(x))]. b) What is the domain of the function go f? 5. Solve the following equations: a) exp(3x) = 2. [Note that exp(x) = ex]. b) In(x2) = 3. 6. a) Show that the triangle with vertices A(6, -7), B(11, -3), and C(2, -2) is a right triangle using the converse of the Pythagorean Theorem. b) Use slopes to show that ABC is a right triangle. c) Find the area of the triangle