In 2005​, it took 20.41 currency units to equal the value of 1 currency unit in 1915. In 1990​, it took only 13.20 currency units to equal the value of 1 currency unit in 1915. The amount it takes to equal the value of 1 currency unit in 1915 can be estimated by the linear function V given by V(x)=0.4917x+13.8177​, where x is the number of years since 1990. ​Thus, V(11) gives the amount it took in 2001 to equal the value of 1 currency unit in 1915. Complete parts​ (a) and​ (b) below.