Respuesta :

Answer:

Exercise 2)

(6y^2 - 10y)

Exercise 3)

25$

Exercise 4)

y = x + 5

Step-by-step explanation:

Exercise 2)

(3y - 5) * 2y = 6y^2 - 10y

Exercise 3)

30 * m (Months) + 25

Exercise 4)

3x - 3y = 15 (divide by 3)

x - y = 5 (-x and multiply by (-1))