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Tomas bought 3 software apps and 2 e-books for a total of $21. The two e-books cost $12. If s represents the cost of each app, the total cost of all 5 items is represented by mc021-1.jpg. Which statement about verifying the solution for s is true?

Respuesta :

First compute the cost of the three apps:
[tex]21-12=9[/tex]
The cost of the three apps is $9 then. 
Since s is the price of the apps, we deduce the equation:
[tex]3s=9[/tex] which means that [tex]s=3[/tex] 

Answer:

s=3

Step-by-step explanation:

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