To find out how many pounds of clay they are left with, we need to calculate the total clay used by Martha, Scott, and Alison, and subtract that from the initial amount of clay (3.8 pounds).
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Martha's usage: Assuming Martha used a certain fraction of the clay (let’s call it x pounds). We need this number to proceed.
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Amount remaining after Martha: Remaining clay = 3.8 - x
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Scott's usage: Assuming Scott used a certain fraction of the remaining clay (let’s call it y pounds). Again, we need this number to proceed.
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Amount remaining after Scott: Remaining clay = (3.8 - x) - y
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Alison's usage: Alison used 1.2 pounds of clay.
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Total remaining clay: Remaining clay = ((3.8 - x) - y) - 1.2
However, since the variables (x and y) haven't been mentioned in your question, I can't provide a final numerical answer directly without that information.
If you provide the specifics on how much clay Martha and Scott used, I will be able to compute the final remaining amount of clay and determine which answer choice (A, B, C, or D) is correct.