The appropriate function which could be used to model the scenario can be written thus ; The program is written in python 3 ;
y = 3x + 3.5
#since no data is given ; using an hypothetical regression equation expressed in slope - intercept format ; where, x = duration and y = Predicted wait time.
def predict_wait(x) :
#initialize a function named predict_wait and takes in a certain duration value, x
y = 3*x + 3.5
#input the x - value into the regression equation to calculate y
return y
#return y
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