Respuesta :
Answer: The ice sheet's thickness decrease every 6 weeks= 1.5 meters
Step-by-step explanation:
GIven: At the beginning of spring, the ice starts to melt. The variable sss models the ice sheet's thickness (in meters) t weeks after the beginning of spring. [tex]s=-0.25t+4[/tex]
At t=0, [tex]s=4[/tex]
So, Thickness of ice sheet at the beginning = 4 meters
Now at t= 6, we get
[tex]s=-0.25(6)+4=-1.5+4=2.5[/tex]
Thickness of ice sheet after 6 weeks = 2.5 meters
Decrease in thickness = 4 meters - 2.5 meters = 1.5 meters
Hence, the ice sheet's thickness decrease every 6 weeks= 1.5 meters