Computer academies.
Academies
The noun computer is the singular form; the plural form is computers.
The plural for computer is computers.
The plural of computer is computersand the plural of is is are, e.g. the computer is expensive: the computers are expensive.
Computer tables.
The plural of "Computer" in German is "Computer." The word is used in the same form for both singular and plural, similar to some other loanwords in the language. To specify the plural, you might use phrases like "viele Computer" (many computers) if needed for clarity.
Computers is the plural form of computer.
Computers.
The plural form of the noun phrase 'elf on a computer' is elves on a computer or elves on computers.
The plural of "academy" is "academies." This follows the standard English rule of forming plurals by adding "s" or "es" to the end of the word, especially for nouns ending in "y" preceded by a consonant, where the "y" changes to "ies."
single!
yes