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a lake near the arctic circle is covered by a 2-meter-thick sheet of ice during the cold winter months. when
spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 3
weeks, the sheet is only 1.25 meters thick.
let s represent the ice sheet's thickness (in meters) after t weeks.
complete the equation for the relationship between the thickness and number of weeks.
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