Answer:
3
Step-by-step explanation:
First we must find the total boxes of pens
15 + 9 = 24
Then we can divide the total cost by the total number of boxes of pens
$72 / 24 boxes = 3
Answer:a>4
Step-by-step explanation:
Answer:
C.
- 4
- 24x + 21
Step-by-step explanation:
(x - 7)(
+ 3x - 3)
x(
+ 3x - 3) + -7(
+ 3x - 3)
(
+ 3
- 3x) + (-7
+ -21x + 21)
- 4
- 24x + 21