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I need help with this practice from my ACT prep guide Having trouble

I need help with this practice from my ACT prep guide Having trouble-example-1
User Platalea Minor
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1 Answer

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9 votes

Given:


f(x)=-4\cos ((2)/(3)x+(\pi)/(3))-3

I need help with this practice from my ACT prep guide Having trouble-example-1
User Itspers
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