The price for calculating the price to deliver a parcel of mass m kg is price ($) = 7 + 3.5m
What is the mass, in kg, of a parcel with a delivery price of $70?
Wrong again.
7 + 3.5m = 70
3.5m = 63
m = 63/3.5 = 18 kg
What is the mass, in kg, of a parcel with a delivery price of $70?
7 + 3.5m = 70
3.5m = 63
m = 63/3.5 = 18 kg