Question 1014180
a) T = C + S 
T = 0.067t^3 -0.107t^2 +0.27t +3.5 + 0.416t +1.24
T = 0.067t^3 -0.107t^2 +0.686t +4.74
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b) For 1992, t = 0 and T = 4.74
For 2000, t = 8 and
T = 0.067(8^3) -0.107(8^2) +0.686(8) +4.74
T = 346.42
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c) average rate of change = (346.42 - 4.74) / 8
average rate of change = 42.71 millions