40 f r e e points in my recent question for anyone who submitted something funny, still has no answer so its their for anyone that wants it!

Which answer is the solution set to the inequality |x|< 9? a. x< -9 or x> 9 b. x> -9 and x< 9 c. x> -9 or x< 9 d. x< 9 and x< 9

How do you use the elimination method for this question? explain, because i really want to understand!

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document