PLEASE HELP!!!!!!The regular price for a gallon of milk, m, fluctuates in both directions by 20% in a given year. Please indicate whether the following expressions indicate an increase or decrease to the regular price, m.1. m + 0.2m (Increase/Decrease/Niether ] 2. m - 0.2m (Increase/Decrease/Niether )3. m -0.2 [Increase/Decrease/Niether] 4. 1.2m ( Increase/Decrease/Niether]5. 0.8m ( Increase/Decrease/Niether)m + 0.2 [ Increase/Decrease/Niether]