89, 93, 72, 80
The minimum grade he must get on the test in order to have an average of 85 is?

95

You add them together and divide by 5

^ The answer is 91 not 95

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 *_*