An average residential swimming pool contains
about 15,000 gal. Suppose the owner wants to use an elec-
tric pool heater to heat the water in such a pool from 63°F
(about 17°C) to 75°F (24°C). If electric energy costs about $1
per 25 MJ, about how much will this cost?
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170% 280 yr r4uo8 47yh4685 tu 88 467999 678995 678
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