Should i send my ACT or SAT?
Also Should I send one, both, or none of my subject tests because none of the schools I am applying to require subject tests?
I am interested in Biomedical Engineering and business
Your ACT is better than your superscored SAT. UMich does not superscore anyway. For CoE at UMich, they will look at your Math section score separately. So if you have a stronger SAT Math section score, you may still want to send in both. You need to think it through if you want to apply to Ross or CoE there unless you want to apply to the dual degree program. In any case, they are all highly competitive.
UMich does not require subject test, but great score would still help. Ine your case, Math2 with 770 is not really considered a great score although it is good. You know the percentage of students getting better score than that. The 660 in Biology is also not impressive at all. So you may skip it and save $12 as it would not help.