I'm guessing it is C because after you solve for n (you need to multiply the five over to isolate n), you get 20.
For Number 48. Your Number Will Be Letter B
For Number 49. Your Number Will Be Letter B As Well
I think it represents where something is starting from, like something growing up (a chart with rising numbers)
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
C=$7.00
C stands for the cost, and n would be the amount of hamburgers. Since we are looking to determine the costs of 14 hamburgers we would have to then multiply 0.5 and 14.
14 x 0.5 =7
So your answer is 7 dollars