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Sladkaya [172]
3 years ago
10

A lake near the Arctic Circle is covered by a 222-meter-thick sheet of ice during the cold winter months. When spring arrives, t

he warm air gradually melts the ice, causing its thickness to decrease at a constant rate. After 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. Let S(t)S(t)S, left parenthesis, t, right parenthesis denote the ice sheet's thickness SSS (measured in meters) as a function of time ttt (measured in weeks).
Mathematics
2 answers:
Ivanshal [37]3 years ago
7 0

S(t) = 3.82 - 0.2t


Step-by-step explanation:


After 7 weeks, the ice is 2.42 meters thick. The ice loses 0.2 meters of thickness per week; this means on the 7th week, it has lost 7(0.2) = 1.4 meters of thickness.


This means the ice started at 2.42+1.4 = 3.82 meters thick.


Our function will start at the original thickness of the ice, 3.82 meters.


Since the ice is losing thickness, we will subtract; it loses at a rate of 0.2 meters per week (t), which gives us 0.2t. This is subtracted from the original, 3.82 meters, giving us


S(t) = 3.82 - 0.2t



Delvig [45]3 years ago
3 0

Answer:

S(t)=−0.25t+2

Step-by-step explanation:

if you're on khan academy this is correct!

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