Answer:
D
Step-by-step explanation:
The other ones don't make sense. The answer is 3.5x+x=9.90
Using the combination formula, it is found that 2,220,075 committees can be formed.
The order in which the people are chosen is not important, hence, the <em>combination formula</em> is used to solve this question.
<h3>Combination formula:
</h3>
is the number of different combinations of x objects from a set of n elements, given by:
In this problem, 8 people are chosen from a set of 12 + 15 = 27, hence:

2,220,075 committees can be formed.
To learn more about the combination formula, you can take a look at brainly.com/question/25821700
Answer:
Well you can try to use a calculator, like the one on google. I can try to help if you really need it.
Step-by-step explanation:
The answer would be D. It would be $42 in the end if you picked D.
9x+72 = 4x+112
5x = 40
x = 8