Answer:
C=6
Step-by-step explanation:
12c+6=78
-6 on both sides
12c=72
divide 12 on both sides
c=6
The letter C would be 78
[Note that you don't have to evaluate k to solve the problem]
That means that
So, you want such that
4. C and D both are correct
12. H
11. B
12 = 400
=
15 = 15 *
= 500.
∴ 500 people took the survey