the annual sale (in millions of dollars) at Apple from 2001 through 2010 can be modeled by S(t)=3405.120e^0.284t. Where t is the number of years since 2000. What is the units for the average rate of change of sales with respect to time over the period from 2001 to 2010.

Respuesta :

For this case we have the following function:

[tex]S (t) = 3405.120e^{0.284t}[/tex]

By definition, the average rate of change is given by:

[tex]Avr =\frac{S(t2) -S(t1)}{t2-t1}[/tex]

If t is the number of years since 2000, we have to:

For the year 2001 [tex]t1 = 1[/tex]

For the year 2010 [tex]t2 = 10[/tex]

On the other hand:

[tex]S (t2) = 3405.120e^{0.284*10}\\S (t2) = 3405.120e^{2.84}\\S (t2) = 58281[/tex]

While:

[tex]S (t1) = 3405.120e^{0.284*1}\\ S (t1) = 3405.120e^{0.284}\\S (t1) = 4524[/tex]

So, we have to:

[tex]Avr =\frac{58281-4524}{10-1}[/tex]


[tex]Avr =\frac{53757}{9}\\Avr = 5973[/tex]

So, the average rate of change is given by: 5973

Answer:

[tex]Avr =5973\frac{millions-of-dollars}{year}[/tex]