____ involves the creation of mathematical equations to calculate various network values.?

Select the true statement below.

a. Using tables can improve your search engine optimization. b. Content contained within Flash media is invisible to search engines. c. Your HTML code must be valid in order to be listed in search engine results. d. Descriptive page titles and heading tags with appropriate keywords can help with search engine optimization.

Which complimentary closing is capitalized correctly??

A. ?Sincerely Yours B. ?very truly yours C. ?Sincerely yours