The equation of circle A is x2 + y2 + Cx + Dy + E = 0. If the circle is moved horizontally to the left of the y-axis without changing the radius, how are the coefficients C and D affected?

A.
C and D are unchanged.
B.
C becomes positive, and D is unchanged.
C.
C becomes negative, and D is unchanged.
D.
C becomes negative, and D becomes positive.

Sandy is upgrading her internet service. fast internet charges $20 for installation and $52.45 per month. quick internet has free installation but charges $57.45 per month. part 1 out of 2 complete the equation that can be used to find the number of months after which the internet service would cost the same. use the variable x to represent the number of months of internet service purchased.