insert_pair

Implement a function insert_pair that takes in a dictionary, key, and value and adds the new key and value pair to dictionary. Your function should return the resulting dictionary.

For example, if dictionary = {'instructors': 2, 'TAs': 10, 'tutors': 35, 'students': 600}, key = 'head tutors', and value = 2. Your function should return the following dictionary.

{'instructors': 2, 'TAs': 10, 'tutors': 35, 'students': 600, 'head tutors': 2}

Sample Input 1:

{‘instructors’: 2, ‘TAs’: 10, ‘tutors’: 35, ‘students’: 600} head tutors 2

Sample Output 1:

{'instructors': 2, 'TAs': 10, 'tutors': 35, 'students': 600, 'head tutors': 2}

Sample Input 2:

{'CSE': 4, 'MATH': 10}
BIO
4

Sample Output 2:

{'CSE': 4, 'MATH': 10, 'BIO': 4}

Sample Input 3:

{}
10
2

Sample Output 3:

{10: 2}