For 1940 to 1980, the daily water use W (in billions of gallons) in the United States followed the
quadratic model
W = 0.050t2 + 6.109t + 130.727
where t = 0 represents 1940. Suppose this model had
been used to predict the water use for 1980 through 1995.
The actual use in 1995 was 402 billion gallons. Was this
less or more than the predicted consumption for 1995?
Explain.