Break this down into two inequalities: 2y+18≥-2, 2y+18<14.
Both equations can be divided through by 2:
y+9≥-1, y≥--1-9, y≥-10;
y+9<7, y<7-9, y<-2.
So y is at least -10 and it's less than -2. The interval for y is [-10,-2). It can be as low as -10 but is less than -2 (between -10 (inclusive) and -2 (exclusive)).