Ethan is shopping on the Internet. He is going to buy 10 songs for his brother as a gift, and some additional songs for himself. Each song costs $1.09, and Ethan can spend up to $20 in all. Which inequality can be solved for n, the number of additional songs Ethan can buy for himself?
A. 1.09n-10<20
B. 1.09n+10<20
C. 1.09(n+10)<20
D. 1.09(n-10)<20
1 answer
A. 1.09n-10<20