* Course content: Auburn will compare the University of Phoenix course descriptions and syllabi to their own Calculus I and II courses to determine if there's sufficient overlap in content and rigor. If the courses don't cover the same material to the same depth, they might not be accepted.
* University of Phoenix accreditation: While University of Phoenix is regionally accredited, the *specific* accreditation and its standing with Auburn's transfer credit evaluation process matters.
* Auburn's transfer credit policy: Auburn has its own specific policies regarding transfer credits, which you must review carefully. This policy might specify limitations on the number of transfer credits accepted or restrictions on which courses transfer.
* Your grades: Even if the courses are deemed equivalent, a low grade in the University of Phoenix courses might prevent Auburn from accepting the credits.
In short: You must contact Auburn University's registrar's office or the admissions office directly. They are the only ones who can definitively tell you whether they will accept your Calculus I and II credits from the University of Phoenix. Provide them with your transcripts and ask specifically about transferability. Don't rely on assumptions.