W varies directly as x and inversely as the square of y

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step-by-step explanation:

h/o/e/s mad

step-by-step explanation:

si si si

it would open into a square depending on the type of envelope i’m not sure about the second part

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3