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Helen [10]
3 years ago
8

A farmer 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.
Mathematics
2 answers:
mr_godi [17]3 years ago
6 0

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:

f(x)=-x^2+20x+75

f(15)=-(15)^2+20(15)+75=150

f(5)=-(5)^2+20(5)+75=150

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

AOC=\frac{f(b)-f(a)}{b-a}

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

\frac{f(15)-f(5)}{15-5}

\frac{150-150}{15-5}

\frac{0}{10}=0

Interpretation: There has not been any increment in yield from year 5 to year 15.

lesantik [10]3 years ago
3 0

Answer:

the answer is The crop yield did not change from year 5 to year 15

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

(see attached for reference)

recall that the formula for compound interest is:

A = P [ 1 + (r/n)^ (nt) ]

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A = 2,340 [ 1 + (0.05/4)^ (4·1) ]

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A lab technician made a 14 cm diameter hole through the middle of a cylinder that has a diameter of 20 cm and a height of 28 cm.
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Answer:

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Step-by-step explanation:

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Note: The hole is also cylindrical in shape.

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