A once-popular children's doll is slowly declining in popularity. The quartic function f left parenthesis x right parenthesis equals 0.002 x Superscript 4 Baseline plus 0.025 x cubed minus 0.364 x squared minus 7.243 x plus 86.993 commaf(x)=0.002x4+0.025x3−0.364x2−7.243x+86.993, where x is the number of years since 1993, can be used to estimate the number of dolls of this type that were sold (in thousands) during a given year from 1993 to 2003. Estimate how many dolls were sold in 1996?
