№2 Python code

Python Code:

k = 4
for i in range(1,4):
    k = i + 2 * k
print (k)

Predicted Output:

1. i = 1: k = 1 + 2 * 4 = 9
2. i = 2: k = 2 + 2 * 9 = 20
3. i = 3: k = 3 + 2 * 20 = 43

Answer: 43