Answer:
Solution in photo
Step-by-step explanation:
D(t) = -4t^3 + 40t^2 + 500t = 4088
4t^3 - 40t^2 - 500t + 4088 = 0
t = 7
Therefore, the plane has flown 4088 km 7 hours after it took off.
Answer:
1 4/5
Step-by-step explanation:
37/5-5 3/5
37/5-28/5
9/5
1 4/5
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