Hanna shops for socks that cost $2. 99 for each pair and blouses that cost $12. 99 each. Let x represent the number of pairs of socks purchased, and let y represent the number of blouses purchased. Which equation models the purchases she made with $43. 92? x y = 15. 98 x y = 43. 92 43. 92x - 2. 99y = 12. 99 2. 99x 12. 99y = 43. 92.