How do you write an equation to represent a real world situation

You could say youre at a store and you have $100 and you have x items that cost 2 each so how many do you have that would equal about $100 ??

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 *_*