Sketch a graph of the polynomial function f(x) = x3 + 4x2 + 3x. Use it to complete each statement. f(x) is
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on the intervals (–∞, –3) and (–1, 0).
f(x) is
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on the intervals (–∞, –2) and (–0.5, ∞).
f(x) is
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on the intervals (–3, –1) and (0, ∞).
f(x) is
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on the interval (–2, –0.5).

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?