Could you explain why the English "Yes, I agree with you." would be translated to the French "Oui, j'accorde avec toi."? I would have thought it would be "Oui, je suis d’accord avec toi" and even Google Translate renders it that way. Not that I am saying Google Translate is authoritative, but I don't really recall "j'accorde" even being in that lesson. But I will go back and look for it again. Thanks.
(Added a couple of minutes later: I did another quiz and this time it agreed with my "Oui, je suis d’accord avec toi".)