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A circular oil spill continues to increase in size. The radius of the oil spill, in miles, is given by the function r ( t
A circular oil spill continues to increase in size. The radius of the oil spill, in miles, is given by the function r(t) = 0.5 + 2t, where t is the time in hours. The area of the circular region is given by the function A(r) = ?r2, where r is the radius of the circle at time t.
Explain how to write a composite function to find the area of the region at time t.
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