What is the general form of the equation of a circle with center at (a, b) and radius of length m? . a. x2 + y2 − 2ax − 2by + (a2 + b2 − m2) = 0 . b. x2 + y2 + 2ax + 2by + (a2 + b2 − m2) = 0. c. x2 + y2 − 2ax − 2by + (a + b − m2) = 0. d. x2 + y2 + 2ax + 2by + a2 + b2 = -m2.

Ms. sutton recorded the word counts and scores of the top ten essays in a timed writing contest. the table shows her data. how does the word count of an essay relate to its score in the contest? word count tends to decrease as the score decreases. word count tends to increase as the score decreases. word count tends to remain constant as the score decreases. word count has no apparent relationship to the score of the essay.

Pls! does anybody know a shortcut for answering these types of questions in the future?

I'm confused on this could anyone me and show me what i need to do to solve it.