the word "and" can unite two or more singular subjects, forming a compound plural subjects. so you need to use a plural verb form. "Together with" or 'along with" is Additive phrase, Additive phrases do not form compound subjects. rather, they function as modifiers and therefore cannot change the number of the subjects.
lz把原題貼上來。hence是副詞,不能引導句子。但加了分號個人認為可以銜接整句。如下兩句在下認為都沒什麼問題。 For instance: I got a good score in the last GMAT. Hence, I can apply a good B-school next year. I got a good score in the last GMAT; hence, I can apply a good B-school next year.