BrainyJanie88
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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 models the ice sheet's thickness (in meters) after t weeks. S=-0.25t+4. What is the ice sheet's thickness at the beginning of spring?

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nyobeadeshina

Answer:

Decreased by 1.5 meters and is now at 2.5 meters.

Step-by-step explanation:

s=−0.25t+4 represents the thickness of the ice over t weeks. To find the thickness at 6 weeks, substitute t=6.

s = -0.25(6)+4 = 2.5 meters

It started at t= 0 at 4 meters. So it decreased by 1.5 meters.

The start of spring has 4 meters because when t= 0, s= -0.25(0)+4 = 4

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The ice sheet's thickness at the beginning of spring is Decreased by 1.5 meters and is now at 2.5 meters.

What is a system of equations?

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

Given ;

s = −0.25t+4

The function represents the thickness of the ice over t weeks.  To find the thickness at 6 weeks,

substitute t = 6,

s = -0.25(6)+4

s = 2.5 meters

Thus, It started at t= 0 at 4 meters. So it decreased by 1.5 meters.

The start of spring has 4 meters because when t = 0,

So, s= -0.25(0)+4 = 4

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