Afarmer is tracking the amount of wheat his land is yielding each year. he finds that the function f(x) = −x2 + 20x + 75 models the crops in pounds per acre over x years. find and interpret the average rate of change from year 5 to year 15.

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.

3 1/3 x 2 3/5 = 8 2/3

step-by-step explanation:

just multiply the first number by the second number to get your answer.