The most each dvd can cost is $4.
I haven’t covered inequalities yet.
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
Since we are just dividing the rectangle into two small rectangles, we are not changing the size of the original rectangle. The two smaller rectangles still add up to the big rectangle, therefore the sum of the areas of the two smaller rectangles is equal to the sum of the larger rectangle.
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