20 Points and Braniest

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual 

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?