Question

I need help with this problem...

Answer 1

A cosmetics manufacturer’s marketing department has developed a linear trend equation that can be used to predict annual sales of its popular Hand & Foot Cream.


Ft = 90 + 10t


where


Ft = Annual Sales (000 bottles)
t = 0 corresponds to 1990


a. Are annual sales increasing or decreasing? By how much?

Answer 2

@satellite73

Answer 3

the larger \(t\) is, the larger \(f(t)\) is

Answer 4

increasing because the slope is 10

Answer 5

yeah, I can't figure by how much though

Answer 6

i think there is a typo here
Ft = Annual Sales (000 bottles)

Answer 7

what should that line be above, it doesn't make any sense

Answer 8

i found a similar prob on the internet: http://hodgesh.people.cofc.edu/DSCI304/Solutions/05%20Solutions.pdf

Answer 9

its on page 3

Answer 10

just rewrite that line and we can figure it out

Answer 11

it's F subscript t = 90 + 10t

Answer 12

t = period

Answer 13

ok i see 000 means a thousand bottles

Answer 14

weird
in any case the answer would be \(10,000\) per year, because you are multiplying by 10

Answer 15

yeah i tried that

Answer 16

cause in the other example with the answer it's 15t and the answer is 15,000

Answer 17

yeah looks good to me

Answer 18

its not right tho

Answer 19

you sure?

Answer 20

yeah.
ok, this is what the hw website looks like:
(it's a fill in the blank)
Annual sales are ____ by ___ thousands bottles per year.

Answer 21

increasing by 10

Answer 22

i was sure i tried that but obviously not cause that's right, thanks. i feel slow know.