In how many businesses with the ambience_trendy attribute?
ambience_trendy attribute refers to attribute_name = 'ambience_trendy' AND attribute_value = 'false'
SELECT COUNT(T2.business_id) FROM Attributes AS T1 INNER JOIN Business_Attributes AS T2 ON T1.attribute_id = T2.attribute_id WHERE T1.attribute_name = 'ambience_trendy' AND T2.attribute_value IN ('none', 'no', 'false')