input: from typing import List
  
  def predict_annual_income(model: keras.Model, age: int, education_level: int) -> List[float]:
      """ Given a trained Keras model, predict the annual income of a customer based on their age 
      and education level. 
      >>> predict_annual_income(model, 50, 3)
      [[80000]]
      """
      return model.predict(np.array([[age, education_level]]))
output:     return model.predict(np.array([[age, education_level]])).tolist()