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Answer:
$540, you just multiply $50 x those 6 months=$300 then you multiply $40 x those other 6 months and you get $240 and then you add 240+300=$540
Explanation:
Wave energy is the transport and capture of energy by ocean surface waves. The energy captured is then used for all different kinds of useful work, including electricity generation, water desalination, and pumping of water.
They increase pressure. I think. It might be wrong though