How do i do this with modelimg with systems of equations common core algebra 1

How is the equation of this circle written in standard form? x2 + y2 - 6x + 14y = 142 a) (x - 3)2 + (y + 7)2 = 200 b) (x+ 3)2 + (y - 7)2 = 200 (x - 6)2 + (y + 14)2 = 142 d) (x+6)2 + (y- 14)2 = 142

Which expression and diagram represent “renee biked four times as far this month as last month”?

24m^2n+30mn^2+18mn, a sweet challenge!