Answer:
It will take
100 songs for the monthly price of Napster to cost the same as iTunes.
7-4=3
........................
46 i think. sorry if i’m wrong
ANSWER

EXPLANATION
The given quadratic trinomial is

Comparing to the general quadratic trinomial:

We have a=1, b=10 and c=-8

The factors of -24 that adds up to 10 are -2 and 12.
We split the middle term to obtain;

Factor;

Factor further;

The last option is correct.