1) Sketch on the Argand diagram the regions which satisfy $\displaystyle 1\leq |z+3i| \leq 3$.

so $\displaystyle 1\leq x^2+(y+3)^2 \leq 9$ now what do i do?

2) Indicate clearly on an Argand diagram the region of points that satisfy both the conditions $\displaystyle |z-3+4i|\leq4$ , $\displaystyle |z|\geq |z-10|$

Thanks as always.!