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.