Answer:
h = 20
Step-by-step explanation:
h = 17 + x/6
h = 17 + (18) / 6
h = 17 + 3
h = 20
15a - 54 = -9. Add 54 to each side.
15a = 45. Divide each side by 15.
a = 3
Equation
Because expressions don't contain equal signs
I’m a bit rusty so take my answer with a grain of salt but I believe the equation for a circle in the coordinate plane is as follows
(x-h)^2 + (y-k)^2 = r^2 where (h,k) is the vertex
So applying the equation we get the fourth or final answer at the bottom or
(x+1)^2 + (y-2)^2 = 64