Answer: B. 80
Step-by-step explanation:
Solve the equation they've given you:

U divide ABC by cm then multiples them together
Total numbers of whole number that has a sum of 12.
1. 11 + 1 = 12
2. 10 + 2 = 12
3. 9 + 3 = 12
4. 8 + 4 = 12
5. 7 + 5 = 12
6. 6 + 6 = 12
7. 12 + 0= 12
so there are 7 pairs of whole numbers being added that have a sum of 12
Answer:
D. log(9)
Step-by-step explanation:

Remember: 

Remember: 

Simplify...

Hope this helps! If you need steps for simplifying, just ask! :]