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Need helpppppppppppp

Need helpppppppppppp-example-1
User Deimus
by
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1 Answer

3 votes

Answer:

Choice D is correct

Explanation:

We have been given the expression;


21\leq-3(x-4)<30

The first step is to open the brackets using the distributive property;

-3(x-4) = -3x + 12

Now we have;


21\leq-3x+12<30\\\\21-12\leq-3x+12-12<30-12\\ \\9\leq-3x<18\\\\(9)/(-3)\geq x>(18)/(-3)\\\\-6<x\leq-3

User Adjan
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