Answer:
about 32,000
Explanation:
You are being asked to evaluate the quartic for x=7.
f(7) = (((-0.022·7 +0.457)7 -2.492)7 -5279)7 +87.419
= ((.303·7 -2.492)7 -5.279)7 +87.419
= (-0.371·7 -5.279)7 +87.419
= -7.876·7 +87.419
= 32.287
The number of dolls sold in 2000 was approximately 32,000.