Angle of rotation that maps (4, -2) to (2, 4)?

Me on this online 24 game! you have to add, subtract, multiply, or divide any of these to equal !

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Melanie is buying a bathing suit that costs 39.99. she is given a discount at the cash register of $6.00 when she scratched 15% off on a game piece for a store promotion. what will the sale price of melanie’s bathing suit be?