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The resistance y in ohms of 1000 feet of solid metal wire at 77∘F can be approximated by the model y = 12,000 x2 − 0.38, 5 ≤ x ≤ 100 where x is the diameter of the wire in mils (0.001 in). If the diameter of the wire is doubled, the resistance is changed by approximately what factor? In determining your answer, you can ignore the constant -0.38. 5 4 1/2 1/5 1/4

The resistance y in ohms of 1000 feet of solid metal wire at 77∘F can be approximated by the model y = 12,000 x2 − 0.38, 5 ≤ x ≤ 100 where x is the diameter of the wire in mils (0.001 in). If the diameter of the wire is doubled, the resistance is changed by approximately what factor? In determining your answer, you can ignore the constant -0.38. 5 4 1/2 1/5 1/4

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The resistance y in ohms of 1000 feet of solid metal wire at 77 ∘ F can be approximated by the model y = 12 , 000 x 2 − 0.38 , 5 ≤ x ≤ 100 where x is the diameter of the wire in mils ( 0.001 in). If the diameter of the wire is doubled, the resistance is changed by approximately what factor? In determining your answer, you can ignore the constant -0.38 . 5 4 1 2 1 5 1 4

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