Answer:
D. 81
Step-by-step explanation:
I think the attached photo supports for your question to be answered
Here is my answer:
Number of days: 30
Mean of the data set = (68 + 70*2 +74*2 +76*4 +78 +80*5 + 82*3 +84*5 + 88 +88*3 + 92*3) /30 = 81
14 beacause your multiplying 7x2 wich is 14
I think the answer is 8,100,000
The answer will be 69.3÷4. Hope it help!