Answer:
House 3 charges the most per night.
House 1 charges the least per night.
I'm sorry that's all i can do without a scientific calculator. Trust me you cant find one online.
Explanation:
House 1: y = 200 + 200x
House 2: y = 100 +249x
House 3: y = 115 +230x
1) House 2: Beachy Keen
2) House 1: Shore thing
3) House 1: Shore thing
4) House 2: Beachy Keen
5) House 1: Shore thing $1400
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