Factor the polynomial completely 9x^3 - 63x^2 - 4x + 28

(x - 7)(9x^2 - 4)

(x - 4)(9x^2 - 7)

x(9x - 4)(x - 7)

(x - 7)(3x - 2)(3x + 2)

F(x)= 1/x-4, g(x)=4x+1/x a. use composition to prove whether or not the functions are inverses of each other. b. express the domain of the compositions using interval notation.

What is the value of r of the geometric series?

What is the number 321,000,000 in scientific notation? also what is the number? ?