a man can do a job in 5 days working alone and his helper can do the job in 10 days working alone. what part of the job can they do in one day when working together at their respective rates

Acompound inequality is graphed, and its graph consists of all real numbers. which open scentence could have resulted in this solution set r> 3 or r< -2. r< 3 or r< -2. r> 3 or r> -2. r< 3 or r> -2 plz asap