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how do i write these in equations to represent each situation?

1. the perimeter P of a rectangle is the sum of twice the length L and twice the width W

2. the volume V of a rectangular prism is the product of its three dimensions: length L,width W, and height H

3. The cost C of a telegram of 18 words is the cost F of the first 10 words plus the cost A of each additional word.

  • math -

    how do i write these in equations to represent each situation?

    1. the perimeter P of a rectangle is the sum of twice the length L and twice the width W

    2. the volume V of a rectangular prism is the product of its three dimensions: length L,width W, and height H

    3. The cost C of a telegram of 18 words is the cost F of the first 10 words plus the cost A of each additional word.

  • math -

    P=2(L+W)

    Try the rest, and post the answer for a check if you wish.

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