Answer:
Center (-5, 2) and radius 5
Step-by-step explanation:
The equation for a circle is 
Where (h, k) is the center and r is the radius.
Answer:
Step-by-step explanation:
6(x+1) = -2(3x+9)
6x+6 = -6x-18
6x+6x+6-6 = -6x+6x-18-6
12x=-24
x= -2
Answer:
C= 82.1116
k=-0.0007192
Step-by-step explanation:

Applying logarithmic properties yields in the following linear system:

Solving for k:

Solving for C:

C= 82.1116
k=-0.0007192