Question

Mariana receives a $20 gift card for downloading music and wants to determine how many songs she can purchase. Each downloaded song costs $1.29. If m represents the number of songs downloaded, which inequality represents the given situation?
20 m greater-than-or-equal-to 1.29
20 m less-than-or-equal-to 1.29
1.29 m less-than-or-equal-to 20
1.29 m greater-than-or-equal-to 20

Answer 1

1.29 m less-than-or-equal-to 20

Explanation: Total cost = 1.29·m must be at most $20, so 1.29m ≤ 20. That means m ≤ 20/1.29 ≈ 15.5, so she can buy at most 15 whole songs.