The DJs unit rate is 5 songs for every 1 commercial.
I found this by dividing both the commercials and the songs by their greatest common factor, or 2.
Answer:

Step-by-step explanation:
The slope-intercept form of equation of a linear function:

m - slope
b - y-intercept
We have the slope m = 4/5 and the y-intercept b = -6. Substitute:

The second part = 1
the second part could be written sin²x.(1/sin²x), since cscx =1/sinx
hence 1 = 1
Simplify the radical by breaking the radicand up into a product of known factors, assuming positive real numbers.
1.5
i
1.5i