Mariana receives a 20 dollars gift card for downloading music and wants to determine how many songs she can purchase. Each downloaded song costs 1 point 2 9 dollars If m represents the number of songs downloaded, which inequality represents the given situation?
Answer
A
20 m is greater than or equal to 1 point 2 9
B
1 point 2 9 m is greater than or equal to 20
C
1 point 2 9 m is less than or equal to 20
D
20 m is less than or equal to 1 point 2 9
Explanation
Each song costs $1.29, so buying m songs costs 1.29m dollars. Mariana cannot spend more than the $20 on her gift card, so the total cost must be less than or equal to 20: 1.29m ≤ 20. This matches choice C, “1.29m is less than or equal to 20.”
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