Answer:
1)

2) 93 inches
Explanation:
1) We know that the lenghts are given by these expressions:

Then, we need to add them in order to find the expression that represents the total length of the rope:
- Apply Distributive property.
- Add the like terms.
Then:

2) Knowing that:

We must substitute these values into
in order to caculate the total lenght of the rope. This is:
