In 2008, it took $21.57 to equal the value of $1 in 1913. In 1985, it took only $10.87 to equal the value of $1 in 1913. The amount it takes to equal the value of $1 in 1913 can be estimated by the linear function V given by
V(x) = 0.4652x + 10.87,
where x is the number of years since 1985. Thus, V1102 gives the amount it took in 1995 to equal the value of $1 in 1913.

(a) Use this function to predict the amount it will take in 2018 and in 2025 to equal the value of $1 in 1913.
(b) When will it take approximately $40 to equal the value of $1 in 1913?

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THE UNITD SENTES O 1985 1990 1995 2000 2005 2010 2015