The breaking strength z (in pounds) of a manila rope can be modeled by z=8900d2, where d is the diameter (in inches) of the rope. a. Describe the domain and range of the function. The domain is ≥ and the range is ≥ . Question 2 b. Identify the graph of the function. Question 3 c. A manila rope has four times the breaking strength of another manila rope. Does the stronger rope have four times the diameter? , the relationship is , so a rope with 4 times the diameter will have times the breaking strength.