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23 November, 18:38

Write an inequality for x that would give a rectangle with the length of 3ft and width of x+5ft, a of at least 300 ft.

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  1. 23 November, 18:39
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    P≥300

    300≤P

    P=2 (L+W)

    300≤2 (L+W)

    L=3

    W=x+5

    300≤2 (3+x+5)

    300≤2 (8+x)

    divide both sides by 2

    150≤8+x

    minus 8 both sides

    142≤x

    x is at least 142

    width is at least 147
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