Sarah plans to sell homemade birdhouses at the local craft fair. She spent $90 on new tools and estimates that

Question

Sarah plans to sell homemade birdhouses at the local craft fair. She spent $90 on new tools and estimates that she spends $6 in materials for each birdhouse. Which rational function models the average cost per birdhouse, y, in dollars of building x birdhouses?

GPT-5 mini · Answer

Total cost = 90 + 6x. Average cost per birdhouse y = (90 + 6x)/x = 6 + 90/x, for x > 0 (x ≠ 0).

Sarah plans to sell homemade birdhouses at the local craft fair. She spent $90 on new tools and estimates that she spends $6 in materials for each birdhouse. Which rational function models the average cost per birdhouse, y, in dollars of building x birdhouses?

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