Answer: 3 boxes
Step-by-step explanation:
If each box is 12, 3 Times 12 is 36 plus the 2 for each box gives you 42
$40/12 = unit rate simplify = 10/3
$10/3 per book
18 * 10/3 = $60 for 18 copies
Answer: x = -3
Step-by-step explanation:
i simply divided by -7, in order to get x by itself.
-7/-7x = 21/-7
that cancels out the -7 on the left side, and leaves us with -3 on the right side!
x = -3
Answer:
2.39 cm
Step-by-step explanation: