So the question is asking to covert the said formula by making the a as the solution or the ask of the said equation, well in that matter, I would say, base on my own conversion and further computation about the said equation, the value of a is (y+z)/(x+w). I hope this would help
R + c=24
r=3c
3c+c=24
x=6
So there are 18 rock CDs
Answer:
b
Step-by-step explanation: