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Help. I have not done math in a long time. I need help making the equation. I will be able to complete the equation if I only knew how to write out the equation.

At a depth of x feet under water, the pressure in pounds per square inch is .43x + 14.7. What is the pressure in punds per square inch for a depth of 10 feet? 100 feet? o feet(surface of the water)/

P= .43x + 14.7

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