Question

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

Answer 1

4.75

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

Answer 2

Answer: 4.75

Explanation: