The sales tax on a $750 computer is $48.75. what is the sales tax

The sales tax is $48.85 or  6.5% of the value. 

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 *_*