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astra-53
2 months ago
9

The average rate of change from x = 0 to x = 15 is about −4.667. How does the average rate of change from x = 0 to x = 20 compar

e to this number?
Suppose that the height of the slide is 2 feet, when x = 20. What is the average rate of change over the entire slide?

Mathematics
1 answer:
Leona [12.6K]2 months ago
6 0
Initially, we determine the average rate of change between x = 0 and x = 15:
Calculating:
R = (80 - 10) / (0 - 15)
R = -4.666666667
Next, we find the average rate for the full interval from x = 0 to x = 20:
R = (80 - 2) / (0 - 20)
R = -3.9
Answer:
The average rate of change across the entire slide is:
R = -3.9
The average rate from x = 0 to x = 15 is approximately -4.667. How does the average rate from x = 0 to x = 20 compare?
The percentage difference is calculated as:
(-3.9 / -4.666666667) × 100 = 83.57142857%
Then subtracting from 100 gives:
100 - 83.57142857 = 16.42857143%
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Response:

  • Refer to the attached graph
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Clarification:

To analyze log (−5.6x + 1.3) = −1 − x visually, graph these equations on the same coordinate system:

  • Equation 1: y = log (5.6x + 1.3)
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The first equation can be graphed using these characteristics of logarithmic functions:

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  • y-intercept:

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        x            log (-5.6x + 1.3)

        -1           0.8

        -2           1.1

        -3           1.3

  • This graph is shown in the attached image: it's represented by the red curve.

Graphing the second equation is simpler as it forms a straight line: y = - 1 - x

  • slope, m = - 1 (the coefficient of x)
  • y-intercept, b = - 1 (the constant term)
  • x-intercept: y = 0 = - 1 - x ⇒ x = - 1
  • This graph is indicated by the blue line in the image.

The resolution to the equations corresponds to the points where the two graphs intersect. The graphing method thus allows you to determine the x coordinates of these intersection points. Ordered from smallest to largest, rounded to the nearest tenth, we have:

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