A beam in a viewing booth for officials at the Daytona 500 auto race is being replaced. The strength(weight) of a beam (s) is directly proportional to its width (w) and the square of its depth (d).
Write an equation for s involving the width and the depth that could be used to solve for the constant of variation k.
s=k*w*d^2
The current beam is 3.5 inches wide and 6 inches deep and will support a weight of 1260 pounds. Find the constant of variation k.
1260=k*3.5*6^2
1260=k*126
k=1260/126
k=10
If a replacement beam is 3 inches wide and 7 inches deep, how much weight can it suppo

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