"A music app charges $2 to download the app plus $1.29 per song downloaded equals the total cost. Write the equation.
y=mx+b
The equation that represents the total cost of downloading the music app and songs would be:
y = 2 + 1.29x
In this equation, y represents the total cost, x represents the number of songs downloaded, 2 represents the initial cost of downloading the app, and 1.29 represents the cost per song downloaded.