Week	Calls	Weeks	Calls	Weeks	Calls
1	50	9	35	17	55
2	35	10	20	18	40
3	25	11	15	19	35
4	40	12	40	20	60
5	45	13	55	21	75
6	35	14	35	22	50
7	20	15	25	23	40
8	30	16	55	24	65

1. How would the forecast for week 25 of the previous problem change if the initial forecast was 40 instead of 50?

2. How would the forecast for week 25 change if the forecast for week 1 was assumed to be 60?