Question

A music app charges $2 to download the app plus $1.29 per song downloaded. Write and solve a linear equation to find the total cost to download 30 songs (please write it out )

Answer 1

Answer: $y=2+1.29x$

Total cost to download 30 songs = $ 40.7

Step-by-step explanation:

Given : A music app charges $2 to download the app plus $1.29 per song downloaded.

Then the total cost = Charge to download app + price per song x (No. of songs)        (1)

Let x be the number of songs and y be the total cost ( in dollars).

Then, we have the following equation ,

$y=2+1.29(x)$  [Substitute values in (1)]

i.e. Required linear equation = $y=2+1.29x$

At x= 30 , we have

$y=2+1.29(30)=2+38.7=40.7$

Hence, the total cost to download 30 songs = $ 40.7

Answer 2

$2+$1.29(30).  Multiply $1.29 times 30, and you get 38.7.  Add $2 on to this and you answer is 40.7