Eliminate the parameter. x=sqrt of t y = 2t+5

X = sqrt 
t = x^2

y = 2t + 5
2t = y - 5
t = (y - 5)/2

so x^2 = (y - 5) / 2

2x^2 = y - 5 

y = 2x^2 + 5

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 *_*

The answer would be $68.04