The correct spelling of the phrase "age the redhot mamas" is [ˈeɪdʒ ðə ˈɹɛdˌhɑt ˈmɑməz]. The word "age" is spelled with an "e" at the end to represent the long "a" sound. "Redhot" is spelled as one word with no space and an "e" at the end to represent the long "o" sound. "Mamas" is spelled with an "a" instead of an "e" to represent the short "a" sound. The IPA transcription helps to break down the phonetics of the word, making it easier to understand and spell correctly.