A once-popular children's doll is slowly declining in popularity. the quartic function f (x)equals negative 0.022 x superscript 4 baseline plus 0.457 x cubed minus 2.492 x squared minus 5.279 x plus 87.419 commaf(x)=−0.022x4+0.457x3−2.492x2− 5.279x+87.419, 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 19941994.

Approximately 80,083 dolls were sold in year 1994.

Step-by-step explanation:

We are given the following information in the question:

The function f(x) estimates the number of dolls that were sold in thousands during a given year from 1993 to 2003.

where x is the number of years since 1993.

We have to estimate the number of dolls that were sold in 1994.

We put x = 1, as x  x is the number of years since 1993. Thus, it is 1 year for 1994 since 1993

Putting values, we get,

Thus, approximately 80,083 dolls were sold in year 1994.

answer: what equations are there

step-by-step explanation:

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,