Answer:
The answer is 90 songs.
Step-by-step explanation:
Let x be the number she has to transfer, then:
x + 150 =2(210 - x)
x + 150 = 420 - 2x
3x = 420 - 150
3x = 270
x = 90
Step-by-step explanation:
The vertex form of a parabola can be written as

where (h, k) are the coordinates of the parabola's vertex. The vertices of the functions are as follows:
a) (3, 5)
b) (-7, 3)
c) (4, 0)
d) (0, -1)
e) (-1, -5)
f) (-1, -5)
Answer:
Step-by-step explanation:
2
2
2
1