The scatter plot drawn at left depicts the price of 1 gallon of gasoline in the United States (U. S.), y, in dollars, from 1980 to 2008. If x
represents the number of years since 1980, the graph of a quadratic
model that fits this data has a vertex at (17.24, 1.33). What does the
vertex tell us about U. S. gas prices?
A
In the year 1997, the price for 1 gallon of gasoline
reached its exact maximum value of $1.33.
B
In the year 1997, the price for 1 gallon of gasoline
reached its exact minimum value of $1.33.
In approximately the year 1997, the price for 1
gallon of gasoline reached its approximate
maximum value of $1.33.
D
In approximately the year 1997, the price for 1
gallon of gasoline reached its approximate
minimum value of $1.33.