9514 1404 393
Answer:
Step-by-step explanation:
A unit rate is a ratio. When dollars are involved, we usually want dollars in the numerator. When time is involved, we usually want time in the denominator.
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rice: $9/(1.5 kg) = (9/1.5) $/kg = $6/kg
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growth: (350 people)/(7 years) = (350/7) people/year = 50 people/year
