An example of unit price in germany is the electricity
Answer:
Step-by-step explanation:

You should purchase 322 boxes. If you take 7.714 decided by 24 solar panels per box, you get 321.416667 and because you can purchase .416667 of a box, you round up to 322
We simply replace a with -9
k(-9) = 4 * -9 - 4
k(-9) = -40
:)