Aroofer requires 9 h to a shingle roof. after the roofer and an apprentice work on a roof for 6 h, the roofer moves on to another job. the apprentice requires 12 more hours to finish the job. how long would it take the apprentice, working alone, to do the job?

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4