Acleaning crew can clean 5 offices in 6 hours how may can they clean in 12 hours

10 offices because your just doubling the ammout of work done

- 10 offices

The center-radius form of the circle equation is in the format (x – h)^2 + (y – k)^2 = r^2, with the center being at the point (h, k) and the radius being "r". We do as follows:
x^2 − 4x + y^2 + 8y = −4(x^2 − 4x) + (y^2 + 8y) = −4(x^2 − 4x + 4) + (y^2 + 8y + 16) = −4 +4 + 16(x - 2)^2 + ( y + 4)^2 = 16 = 4^2
Center: (-2 , 4 )radius: 4