Yes, he is correct. The problem states that he had $129.50 and he spent it all on his hiking trip so he has $0.00 left in his bank account.
For this case, we have the following equation of the second degree:

If we divide between 2 on both sides of the equation, we will have:

Where:

The solutions will come from:

Substituting:

So, we have:

Answer:

Option A
Option E
Answer:

Step-by-step explanation:
The total length of the belt is:


Answer:
Yes, it's 13r.
Step-by-step explanation:
5r+8r=13r
Joe is at most 20 and Bill would be at most 27 because it has to be less than 49 combined