def can_vote(age: int) -> bool:
    """Return True iff age is legal voting age of at least 18 years.

    >>> can_vote(16)
    False
    >>> can_vote(21)
    True
    """
    
    #if age < 18:
        #return False
    #else:
        #return True
        
    return age >= 18



def is_teenager(age: int) -> bool:
    """Return True iff age is a teenager between 13 and 18 inclusive.

    >>> is_teenager(4)
    False
    >>> is_teenager(16)
    True
    >>> is_teenager(19)
    False
    """
    
    #if age < 13:
        #return False
    #else:
        #if age > 18:
            #return False
        #else:
            #return True

    return 13 <= age <= 18