3(2x+1)=15
6x+3=15
-3 -3
6x=12
divide each side by 6
x=2
I gues you want to know the price of an individual shirt?
(13.98+3.96)/6
17.94/6
2.99
An individual shirt costs 2.99$
Using the Fundamental Counting Theorem, it is found that Kami could create 40,000 codes that start with an even number.
<h3>What is the Fundamental Counting Theorem?</h3>
It is a theorem that states that if there are n things, each with
ways to be done, each thing independent of the other, the number of ways they can be done is:

In this problem:
- The first digit has to be even, that is, 2, 4, 6 or 8, hence
.
- For the remaining digits there are 10 outcomes for each.
Hence:

Kami could create 40,000 codes that start with an even number.
More can be learned about the Fundamental Counting Theorem at brainly.com/question/24314866
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