Plz help me

Ineeeeed this is due tomorrow and i dont know the answer can you find all the exponents

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

The art class is planning to paint a mural on an outside wall. this figure is a scale drawing of the wall. width: 11 in length: 28 in unit rate: 1.5 ft per in. write the ratio of the area of the drawing to the area of the actual mural. write your answer as a unit rate. show that this unit rate is equal to the square of the unit rate 1.5 ft per in