Question

ajay signed up for a streaming music service that costs $15 per month. the service allows ajay to listen to unlimited music, but if he wants to download songs for offline listening, the service charges $1 per song. how much total money would ajay have to pay in a month in which he downloaded 40 songs? how much would he have to pay if he downloaded s songs? cost with 40 songs: cost with s songs:

Explanation:

Step1: Identify the fixed - cost and variable - cost

The fixed - cost of the streaming service per month is $b = 15$. The cost per song downloaded is $m = 1$. The number of songs downloaded is $x$. The cost formula is $C=mx + b$.

Step2: Calculate cost for 40 songs

Substitute $x = 40$ and $m = 1$, $b = 15$ into the formula $C=mx + b$. We get $C=1\times40+15$.
$C = 40 + 15=55$.

Step3: Calculate cost for s songs

Substitute $x = s$, $m = 1$, and $b = 15$ into the formula $C=mx + b$. We get $C=s + 15$.

Answer:

Cost with 40 songs: 55
Cost with s songs: $s + 15$