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3 August, 00:49

A crane is lowering a concrete block from a height of 270 feet above the ground at a constant rate of 2.5 feet per second. Which function can be used to determine h, the height, in feet above the ground of the concrete block after "s" seconds?

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  1. 3 August, 03:35
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    The function would be h = 270 - 2.5s, where h is the height (in feet) and s it the time (in seconds) that has passed.

    The 270 represents the initial value, which is given. We are told that the initial height of the block is 270 feet.

    2.5s represents the feet that it has descended. We know the block is lowered at a rate of 2.5 feet per second. Multiplying this by s, the time, will give us how much it has descended.
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