An ordinary annuity is a set of equal payments made at the beginning of each period

Idrk but i think u should figure out the n dia n then the units it will make it way more easier

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*