The function models the value, in dollars, of a rare coin years after 1980. Which of the following is the best interpretation of " is approximately equal to 630" in this context?
The value of the coin is estimated to be approximately 15 dollars greater in 1995 than in 1980.
The value of the coin is estimated to be approximately 630 dollars in 1995.
The value of the coin is estimated to be approximately 15 times greater in 1995 than in 1980.
The value of the coin is estimated to increase by approximately 630 dollars every 15 years between 1980 and 2000.