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Mathematics - Algebra - Equations

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106. Worker efficiency. In a study of worker efficiency at Wong
Laboratories it was found that the number of components
assembled per hour by the average worker t hours after
starting work could be modeled by the formula
N(t) = 3t^3 + 23t^2 +8t.

a) Rewrite the formula by factoring the right-hand side
completely.
b) Use the factored version of the formula to find N(3).

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