I cannot locate accurate answers anywhere regarding these. My explanations are below each example. I believe that all examples may be correct but am unsure. I'm just looking for some confirmation. In which, if any, would you change the punctuation?
(1) Mike said, "The team needed ten point five million.” [No hyphens because 'ten point five million' isn't modifying anything. Good as is?]
(2) Mike said, "The team needed ten-point-five-million dollars." [Hyphenate because 'ten-point-five' is modifying dollars, correct?]
(3) Mike said, "The figures represented a ten-point-five-million-dollar-a-year increase in revenues." [Hyphenated because 'ten-point-five-million-dollar-a-year' is modifying 'increase'. Good?]
(4) "Mike said, "The figures represented a ten-point-five-percent increase." [Hyphenated because 'ten-point-five-percent' is modifying 'increase', correct?]
(5) Mike said, "The figures represented a ten-point-five-percent-a-year increase." [Hyphenated because 'ten-point-five-percent-a-year' is modifying 'increase', yes?]
(6) Joe said, "She displayed one-hundred-and-ten-percent commitment." [Hyphenated because 'one-hundred-and-ten-percent' modifies 'commitment'.]
(7) Dave said, "I'll give it one hundred and ten percent." [No hyphens because 'one hundred and ten percent' isn't modifying anything.]
(8) Louise said, "The interest rate is at twelve point seven." [No hyphens because 'twelve point seven' isn't modifying anything, correct?]
(9) Louise said, "The interest rate is at twelve-point-seven percent." [Hyphenated because 'twelve point seven' is modifying 'percent', right?]
(10) Louise said, "I need one-hundred-percent commitment from you." [Hyphenated because 'one-hundred-percent' modifies 'commitment', correct?]