This is something you will quickly come to recognise easily however the way to work out what is the biggest change is 1.9470 - 1.8470 = 0.1 2.2199 - 2.2188 = 0.0011 3.15209 - 3.15208 = 0.00001 4.72096 - 4.72086 = 0.0001 Therefore the first one is the biggest change
For the first month it will be $40 for the service and $35 to activate the phone service. After the first month it will only be $40 but for the first month it will be $75
