Officially the undergraduate programs offered at upsa and their general requirements below.
Undergraduate Degree Programmes
Bachelor of Science (BSc.) in Accounting
Bachelor of Science (BSc.) in Banking and Finance
Bachelor of Science (BSc.) in Marketing
Bachelor of Business Administration
Admission Requirements - Level 100
West African Senior School Certificate Examination (WASSCE) & Senior Secondary School Certificate Examination (SSCE) Applicants
WASSCE and SSSCE applicants must have at least credit passes (i.e. grade A1-C6 and grade A-D respectively) in three core subjects including English Language, Mathematics and Integrated Science/Social Studies in addition to any three elective subjects with an aggregate score of 24 or better.
As you can read above your d7 in maths will pose a threat but BECAUSE MOST OF YOUR OTHER GRADES ARE VERY GOOD, YOUR D7 MOST LIKELY WOULD BE OVERLOOKED. So your chances of getting admission is so high because upsa is a business bias school and therefor according to your grades you are more business oriented person that needs little refinement in maths. I personally know so many many people with far worst grades that have gotten admission into upsa so please relax and enjoy your day. If there is reason not to admit you, it will not be because of the d7.