Ineed with this one problem. best buy buys cds for $3.00 from a wholesaler. then sells the cds for $10.50. what is the markup rate? show your work.

Cost = $3.00
selling price = $10.50
markup = 10.50 - 3.00 = 7.50
markup rate = 7.5/10.5 x 100 = 71.43%

The linear equation is: y=ax+b

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 *_*