Answer:
5 shifts
Step-by-step explanation:
7 1/2= 7.5
1 1/2= 1.5
7.5/1.5= 5
Answer:

The reason is because we assume that each week have the same weight and replacing we got:

And the best option would be:
D. 221.25
Step-by-step explanation:
For this case we have the following data given
Week 1 2 3 4
Minutes 190 163 327 205
For this case we can find the mean with the following formula:

The reason is because we assume that each week have the same weight and replacing we got:

And the best option would be:
D. 221.25
4.5 x 10 to the power of 4
8 * 54 = 8 * 50 + 8 * 4 = 8(50 + 4)