Answer:
$52
Step-by-step explanation:
3 books → $13
1 book → $13/3
12 books → $13/3 x 12 = $52
2.5 rounds to 3
5 divided by (or 5/2) 2 is 2.5 and since its not a whole number you rounded by the ones and you get 3.
Answer: D hope this helps
n=5
12+5=17 is equal to 12+n=17 so n=5
