"""Provide model API."""defadd(a,b):"""Add two values."""returna+bdefmul(a,b):"""Multiply two values."""returna*bdefpredict(x):"""Predict y for new observation x."""intercept=5coef=0.7returnadd(mul(coef,x),intercept)defmain():forxinrange(10):y=predict(x)print(f"f({x}) = {y}")if__name__=="__main__":main()