Question: Tiffany bought 12 songs for $1.09 per song. Which equation shows the BEST estimate of the total cost?
A) 10 × $1 = $10
B) 10 × $2 = $20
C) 12 × $1 = $12
D) 12 × $2 = $24
Correct answer: C
Grade: 7 | Topic: Expressions and Equations | Difficulty: Easy | Standard: 7.EE.B.3