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These question are hard can you me with answers

Determine if the outside temperature is a function of the time of day or if the time of day is a function of temperature and explain why or why not.

Abarge can safely haul no more than 400 tons across the river. the barge has an empty weight of 24 tons. the average weight of the railroad cars is 4 tons each.bhow many railroad cars can the barge haul?