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 . Which statement about verifying the solution for s is true?
Answer
A
The solution is given by because it makes the value of equal to 21.
B
The solution is given by because it makes the value of equal to 21.
C
The solution is given by because it makes the value of equal to 21.
D
The solution is given by because it makes the value of equal to 21.