If 3x + y = 18, then 2(3x +y) =__________ (1 point) 36 2. if x =5, then 2x +5 is how much more than x?__________ (1 point) 10 3. if x + y = 12, then 3x +3y = ?__________ (1 point) 36 4. if 5.353=53k, what does k equal?__________ (1 point) 5. if x =3.6 and y=6.4, then 100(x + y) = __________ (1 point)