Let y = safe load in pounds and x = depth in inches for a certain type of rectangular horizontal beam. A constant of
proportionality exists such that y = kx2.
Determine the constant k for a beam with y = 1,000 pounds and x = 5 inches.
What is a safe load if the depth of the beam is 10 inches?
800 pounds
4,000 pounds
10,000 pounds

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