*im ugly* rate.who else is 16?

Find the center and the radius of the circle with the equation: x^-2x+y^2+4y+1=0

Which is these is not a benefit of parallel structure? a)clarity b)classification c)emphasis d)balance

What functions as a reflexive pronoun in the sentence the professor herself wanted to attend the conference, but it was cancelled when she and several other presenters had to excuse themselves