My answer is correct...

Question

The question in the lesson was "Do you have a toaster?" (it did not specify formal or informal 'you').  My answer was Tiene usted and was marked wrong.  I think it's correct

Accepted Answer

Hola Teresa
Yes, we do have another pronoun for a "you formal" (instead of tú, informal). So, you can use "usted" when speaking in a more formal situation or to an elderly person for example as a form of politeness. If you use usted, then the verb needs to be conjugated the same was as he/she. For example:

Tú eres muy inteligente. 
You are very intelligent. (talking to a friend, someone you know well)
Usted es muy inteligente. 
You are very intelligent. (talking to a boss or an elderly person for example)

We have a lesson about Tú vs Usted. Have a look.
Saludos
Inma

Answer

Hola Jim,Yes, your answer with "Tiene usted" should also be correct. That's been added to the possible correct answers.Gracias y saludos,Inma

Answer

I was taught I tengo you tienes he she tiene but your system says tiene is for formal you I don't understand