Using a Laplace expansion along the first column, we have

The determinant of a 2x2 matrix is trivial,

So we have

For the answer it would be A
Answer:
Option d.
Step-by-step explanation:
Total employment for sheet metal workers in 2016 is projected to be = 201,000
This is a 6.3% increase from 2006.
Let the number of workers in 2006 be n
n + (6.3% of n) = 201,000
n + ( 0.063n) = 201,000
1.063n = 201,000
n = 
n = 189,087. 4882 ≈ 189,000
the total employment in 2006 was approximately 189,000
Option d is the answer.
Answer:

Step-by-step explanation:

Take
and
on the other side of the equal to sign:

Now solve for y:

Take 2 one the other side of the equation:

Hope this helps :)
Answer:
The 24 pack for 24 dollars!
Step-by-step explanation:
This is because you see that 12 is 1/2 of 24 and if you do 13x2 you get 26$ so for the 12 pack if you double it you will be paying 2$ more than if you got the OG 24 pack