A 'carpeta' is a folder.
Carpeta can mean a folder, a file, a label, a wrapper.
A folder or One folder depending on context
it means three-ring binder
Carpeta de argollas. that's binder, folder is carpeta.
un escritorio/pupitre una carpeta
In Spanish, "carpeta" typically refers to a folder or a file holder used for organizing papers or documents. It can also mean a carpet or rug in some Spanish-speaking regions.
It all depends on what you want "carpeta" to mean. Normally, this means "file" or "folder", but could mean a writing desk or table cover. "¿Cuánto cuesta la carpeta?" already is a sentence, meaning "How much is the file?" If you meant the English word 'carpet', that's 'alfombra' in Spanish. 'Cuanto cuesta/vale la alfombra?' means 'How much is the carpet?'
un fantôme is a ghost in English.
"La Carpeta" in Spanish translates to "The Folder" or "The File" in English. It refers to a physical or digital container used to organize and store documents or files.
Un fils (masc.) is a son in English.
un chapeau (masc.) is a hat in English.