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?
1.09n-10≤20
1.09n+10≤20
1.09(n+10)≤20
1.09(n-10)≤20