Answer :

mhanifa

Answer:

  • B. 113°

Step-by-step explanation:

  • Tc = R + (Th - R)e^(-0.036t)

Substitute values and solve for Tc:

  • Tc = 68° + (146° - 68°)e^(-0.036*15)
  • Tc = 113.45° ≈ 113°

Correct choice is B

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