An expression is shown. ​ 3/11x 12 What is the value of the expression? ​Enter the number in the box.​

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 of the following circles have their centers on the x-axis? check all that apply.

Can someone me and explain..will award brainlest!