Answer:
2.99x + 12.99y = 43.92
Step-by-step explanation:
If each pair of socks is 2.99 and the amount of socks purchased is unknown, then the first part would be 2.99x. x would represent the number of socks.
If each blouse is 12.99 and the amount of blouses purchased is unknown, then the first part would be 12.99y. y would represent the number of blouses.