from cisc106_32 import*

def BillAmount(mb):


    if mb <= 50:
        price=50

    elif 50<mb<=400:
        price=(66.50+(.05)(mb-50.00))

    elif 400<mb<=1000:
        price=(72.00+(.08)(mb-50.00))

    else:
        price=100.00

    return price

assertEqual(BillAmount(45),50)

assertEqual(BillAmount(400),84)

assertEqual(BillAmount(2000),100)

result = (0.5) * (mb - 50.00)

(.05)(mb-50.00)

(.05) * (mb-50.00)

>>> mb=51
>>> (.05)(mb-50.00)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: 'float' object is not callable
>>> (.05)*(mb-50.00)
0.050000000000000003