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2 February, 16:36

Approximating a Solution from a Table

Approximately how many hours of operation will result

in a cost of $310,000?

The table below represents the cost, in hundreds of

thousands of dollars, for operating a factory for x hours.

The data is modeled by the function

f (x) = x3-12x2+385x+57.

4.25

4.5

O 4.75

O

Hours

Cost

1 | 2 | 3 | 4

110 156 203 259

| 5

332

O

5.0

+5
Answers (2)
  1. 2 February, 16:50
    0
    4.75

    Step-by-step explanation:

    3 (5) + 4 = 19 / 4 = 4.75

    4/3 (4.75) ^3 - 15/2 (4.75) ^2 + 355/6 (4.75) + 57

    142.90 - 169.21 + 281.04 + 57 = 311.73
  2. 2 February, 16:55
    0
    Answer: 4.75
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