Words that rhymes with album, reveal and contraband

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

Hi how are i have some questions about english subject can you answer for me ?

Which bibliography entry is written correctly and completely? a. johnson, marie. the solar age. chicago: energy options press, 2014. b. front page story. houston chronicle. 5 apr 2013. c. “will solar work? ” science news. march edition. d. friends of solar. mother earth society, accessed 15 jan 2014.