The answer would be B. You would need to keep the first fraction, change to multiplication, and flip the second fraction and multiply across.
Step-by-step explanation:
1. -9x - 3 - 3 + 2x
-7x - 6
3. 3 - 4x - 7x - 2
-11x - 1
4. 5x - 1 + 3 + 2x
7x + 2
Given that new DVDs are selling for $12 and used for $7, then Joseph is buying:
12·2 + 7<em>x </em>=
Divide I from both sides then subtract r from both sides, too so in the end:
R= (E-r)/I