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Mathematics, 09.04.2020 04:20 organdonor626

A lake near the Arctic Circle is covered by a sheet of ice during the cold winter months. When spring arrives, the ice starts to melt.

S(t) models the ice sheet's thickness (in meters) as a function of time t (in weeks).

S(t)=−0.25t+4

By how much does the sheet's thickness decrease every 6 weeks?

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