A music app charges 2$ to download the app plus 1.29$ per song download. Write and solve linear equa | MathCelebrity Forum

A music app charges 2$ to download the app plus 1.29$ per song download. Write and solve linear equa

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A music app charges 2$ to download the app plus 1.29$ per song download. Write and solve linear equation and a linear equation to find the total cost to download 30 songs

Set up the equation C(d) where d is the number of downloads:
C(d) = cost per download * d + download fee

Plugging in our numbers, we get:
C(d) = 1.29d + 2

The problem asks for C(30):
C(30) = 1.29(30) + 2
C(30) = 38.7 + 2
C(30) = 40.70
 
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