Plz help answer questions 3 and 5 ​

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

Which statement best evaluates the author's use of pacing in the passage? a. the author's use of pacing is not effective, because the imagery and figurative language don't adequately describe either the cheetah or the gazelle. b. the author's use of pacing is effective, because the imagery and figurative language speed up the action, making the scene come alive for the reader. c. the author's use of pacing is effective, because the long, complex sentences the reader fully understand the power and beauty of nature. d. the author's use of pacing is not effective, because the long, complex sentences distract from the sense of stress and anxiety the passage should convey.

Demarco and tanya have received information about three separate mortgage offers. in two or three paragraphs, describe your recommendation for the best financial choice in their situation. evaluate each of the three offers, compare and contrast their effectiveness, and explain the offer that works best. as you explain your answer, support it using reasons and evidence from the calculations you made based on the information provided in this guide for analyzing mortgage options.