Pls help with any questions (I’m a lil too lazy but I’ll be giving a lot of points and I’ll give brainliest to whoever answers more questions

Use the elimination method to find the solution to the system of equations. 2x - 3y = -9 -x + 3y = 6

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.