Hi, i really need with this problem.

1the function represents the number of specialty items produced at the old factory w weeks after a change in management. the graph represents the number of specialty items produced at the new factory during the same time period. (a) during week 0, how many more specialty items were produced at the old factory than at the new factory? explain.

(b) which factory produced more specialty items on the 4th week? how many more items did they produce? show your work.