Answer:
i think b. at least one of them contracted a lung disease

≥-4
Pretend the greater than or equal to sign is an equal sign, we will substitute it back in later.
x/2 = -4
Multiply both sides by 2 to get x alone
x = -8
Substitute the greater than or equal to sign back in and voila!
x≥-8
The answers are 1/5,2/5,3/5,and 4/5
It depends on the question . What is the question asking about?
Integers are closed under subtraction.