Twice the number n is no less than 10 units from - 1

This means that 2n is equal to or greater than - 1 + 10 or - 1-10, which can be shown as 2n ≥ 9 and 2n ≥-11, and since 2n ≥11 encompasses both, we can therefore say 2n ≥-11 or n ≥ - 5.5 by dividing both sides by 2