Answer:
x = 8
Step-by-step explanation:
so 
rearrange the formula:
C because its not in any quadrant because the Y isn't stated so the point -10,0 is located on the X-axis
From the table we can see:
Number of songs: Cost:
0 $ 0
1 $1.25
2 $2.50
3 $3.75
4 $5.00
Therefore the rate of change is: (2.50 - 1.25) / ( 2 - 1 ) = $1.25
Answer:
It means that : C. The cost increases $1.25 for each additional song that is downloaded.
facotr -9
add factors
-1+9=8
correct
