QUESTION IMAGE
Question
if 8 btus heat 2 cubic feet, how many btus are needed for 7 cubic feet? a 30 btus b 24 btus c 26 btus d 28 btus
Step1: Encontrar la tasa de BTUs por pie cúbico
Si 8 BTUs calientan 2 pies cúbicos, entonces la tasa es $\frac{8}{2}=4$ BTUs por pie cúbico.
Step2: Calcular los BTUs necesarios para 7 pies cúbicos
Multiplicamos la tasa por el número de pies cúbicos: $4\times7 = 28$ BTUs.
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D. 28 BTUs