Answer:
28 ÷ 7
Step-by-step explanation:
An expression is an operation between two or more terms. 28 divided by 7 is another way of saying 28 ÷ 7.
Answer:
Average rate of change: 0
Interpretation: No increment in yield from year 5 to year 15.
Step-by-step explanation:
The function that models the yield is:



The average rate of change of f(x) from x=a to x=b is given by the formula;

The average rate of change from year 5 to year 15 is:



Interpretation: There has not been any increment in yield from year 5 to year 15.
When we consider Linear Correlation between two numerical sets, there can be 3 possible relations
a) Positive Association
b) Negative Association
c) No Association
Negative Association or Negative Correlation refers to such a relation in which if values in one data set are being increased, the values in the other data set will decrease, resulting in a negative association. Such data sets always have the value of correlation coefficient between 0 and -1 i.e. a negative value.