4349.sagews

\$20 + \$5/drink + \$8/dessert + tax + service

@interact
def f(drinks=(1..5), desert=True):
    cost = 20 + 5*drinks + (8 if desert else 0)
    cost *= 1.18
    cost *= 1.075
    print "Dinner" + (" + %s drinks"%drinks if drinks else "") + (" + desert" if desert else "")
    print "Total: $%s"%ceil(cost)