Question 12 What is the best data type for storing phone numbers? string int float number Question 7 Given the following expression in Python, which of the operations is performed first? x = 3* 2 ** 2 - (3 * (7-4)) 7-4 3*2 O 2**2 3*7 Question 8 What is the value of z in the following expression in Python? z=10/2*5+1 11 2 error 0