The answer would be x= 68 degrees
We need the graphing tool.
Answer:

Step-by-step explanation:
It could also be 
depending on how the problem is actually set up.
Answer:
B. (2 + 5).
Step-by-step explanation:
18 + 45 = 63
The prime factors of 63 = 3*3*7
So 63 is a multiple of 7.
The answer is (2 + 5) (=7).