Question

he table shows the cost of downloading songs. Number of Songs Cost 0 0 1 $1.25 2 $2.50 3 $3.75 4 $5.00 What does the rate of change mean in this situation? The cost increases $5.00 for each additional song that is downloaded. The cost increases $0.25 for each additional song that is downloaded. The cost increases $1.25 for each additional song that is downloaded. The cost increases $2.50 for each additional song that is downloaded.

Answer 1

Answer: C)The cost increases $1.25 for each additional song that is downloaded.

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Answer 2

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.