Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Explore thousands of questions and answers from a knowledgeable community of experts ready to help you find solutions. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

For which of the following function does f(x) = |f(x)| for every value of x? Explain as well.

A: f(x) = 3 - x
B: f(x) = 2x + [tex]x^2[/tex]
C: f(x) = [tex]x^3[/tex] + 1
D: f(x) = [tex]x^2 + (2-x)^2[/tex]