Answer:
[tex]c=25+1.5d[/tex]
Step-by-step explanation:
Let c represent the total cost and d represent the number of downloaded songs over 100. Therefore, the corresponding equation is:
[tex]$c=25+1.5d$[/tex]
For example, if we downloaded 150 songs, we would expect the cost to be $25 plus $1.50 each for 50 songs: $25 + ($1.50 × 50) = $25 + $75 = $100.
We can verify by substituting 50 for d in our equation:
[tex]c=25+1.5d\\c=25+1.5(50)\\c=25+75\\c=100[/tex]