the united nations' department of economic and social affairs stated in 1999 that "the world's population stands at 6 billion and is growing at 1.3% per year, for an annual net addition of 78 million people.

A) this statement actually contains two contradictory descriptions of predicting world population growth. explain this contradiction.

B) using the information in the statement, construct a linear model for world population in billion in terms of years 1999. define variables

C) using the information in the statement, construct a exponential model for world population in billion in terms of years 1999. define variables

this is my intermediate algebra class..

please i need ur help tnxxx...