Which of the following equations does not represent the sinusoidal function graphed below?
y = -2sin2x
y = 2sin2x + pie/2
y = 2sin2(x + pie/2 )
y = 2sin(2x + π)

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

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