Aradio disc jockey has
8
songs on this upcoming hour's playlist:
4
are rock songs,
2
are reggae songs, and
2
are country songs. the disc jockey randomly chooses the first song to play, and then she randomly chooses the second song from the remaining ones. what is the probability that both songs are reggae songs? write your answer as a fraction in simplest form.

answer: d. $20

step-by-step explanation:

just took the test

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)