4 years ago

Hi i need help with this problem, its due Monday

1 answer:

Serga [27]4 years ago

8 0

The answer is B. 7x + 27 units.

Area is length multiplied by width, so to find the length, simply divide the expression 21x + 81 by the width --> 3.

21x becomes 7x, and 81 becomes 27.

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Both plans last for 1.25 hours (1 hour 15 minutes)

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Let x hours be the time needed for plan A and y hours be the time needed for plan B.

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