Mich. Comp. Laws § 484.3211

Sec. 11. (1) The notes and bonds shall be authorized by resolution of the authority and mature at the time provided in the resolution. The notes and bonds shall be in a form, bear interest at a rate or rates, be in the denominations, carry registration privileges, be payable, and be subject to the terms of redemption as provided in the resolution. (2) The notes and bonds of the authority may be sold by the authority at public or private sales at prices as the authority determines.