R=2.3log(a+300)-5.1 solve for a in terms of r

For the first question the answer is a, for the second c, for the third d, for the 4th b, for the 5th a

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 *_*