(a) The district may incur a debt or borrow money on the credit of the district or secured by any source of revenue, including district taxes to be imposed in the next 12-month period, that is not pledged to pay the principal of or interest on district bonds.
(b) The district may incur a debt or borrow money in any amount at a rate not to exceed the maximum annual percentage rate allowed by law for district obligations at the time the loan is made and on other terms the district considers advisable.