Respuesta :

Answer:

(a):  9x + 45

Option A, 9(x + 5) because it distributes into 9x + 45

Option B, 9 * x + 9 * 5 because it multiplies into 9x + 45

(b):  13 + 9y - 3 - y

Option D, 8y + 10 because it combines into this number