Answer:
(1 + 5 + 7)x
Step-by-step explanation:
Since x represents the number of Pop tracks then x has to be on value
Since there are 5 times as many Classical tracks as there are Pop tracks then that's 5x
Since there are 7 times as many Rap tracks as there Pop tracks then that's 7x
You need to take into consideration that there are also Pop tracks which is x and the coefficient of x is 1
Your total for all tracks would be x + 5x + 7x, but thats not an answer choice
If you take out x then you get (1 + 5 + 7)x
