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5-58.

You will need to show steps:
part (a) e(120 seconds) ≈ 16
part (b) T(4080 feet) ≈ −0.003, −0.004 or −0.005 (depending on which method you use)
part (c) T(210 seconds) ≈ −0.068, −0.087 or −0.05 (depending on which method you use)