Question

fix any errors with subject - verb agreement below. click \submit answer\ if there are none.
the teenagers, as well as dustin henderson, has backstage passes to the concert.

Explanation:

The subject of the sentence is the plural noun "teenagers". Phrases like "as well as Dustin Henderson" do not change the number of the subject, so the verb must agree with the plural subject, requiring the plural verb "has" to be changed to "have".

Answer:

The teenagers, as well as Dustin Henderson, have backstage passes to the concert.