Write down an (in)equality which describes the solid ball of radius 8 centered at (-6, 2, -7). It should have a form like $x^2 + y^2 + (z-2)^2 - 4 >= 0$, where you use one of the following symbols $<, < =, =, > =, >$
The first blank is for the algebraic expression; the second for the (in)equality.
0.