Answer:
Part A: k=1/2
Part B: 5.5 feet
Explanation:
Part A: To go from 16 to 8, you have to divide by 2 (or multiply by 1/2). Since the scale factor is always multiplication, you need to multiply by 1/2.
Part B: Using the scale factor of 1/2, multiply 11 by 1/2 and you will get 5.5.