Analyze the cartoon below:  Why is the hyphen used in “solar...

Because “solar” and “powered” are from different parts of speech.

Because the adjective order is different from the default.

To indicate that “solar” and “powered” describe “tip”, and only “tip” describes “calculator”.

To show both words are not adjectives, but verbs acting as adjectives.

To join “solar” and “powered” as a unit to describe “calculator”.