Find all the zeros of the function and write the polynomial as a product of linear factors.
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y4 - 2401
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A. ±7; (y - 7)(y + 7)
B. ±7, ±7i; (y - 7)(y + 7)(y - 7i)(y + 7i)
C. 7, 7i; (y + 7)(y + 7)(y - 7i)(y - 7i)
D. ±7i;(y - 7i)(y + 7i)
E. ±7, ±7i; (y - 7)(y - 7)(y + 7i)(y + 7i)
Answer: B
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Refer to the weighted voting system 
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Evaluate the expression.
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The current I (in amperes) when 100 volts is applied to a circuit is given by
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?
where t is the time (in seconds) after the voltage is applied. Approximate the current at
t = 0.8 second after the voltage is applied.(Round your answers to two decimal places.)
?
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