A certain forest covers an area of 4600km. Suppose that each year this area decreases by 7.75%. What will the area be after 13 years?
Use the calculator provided and round your answer to the nearest square kilometer.

Respuesta :

Answer:

[tex]1679.60\ km^2[/tex]

Step-by-step explanation:

-We can use the exponential decay function to estimate the size after 13 years:

[tex]P_t=P_oe^{-rt}[/tex]

Where:

[tex]P_t[/tex] is the size after t years, t is the time, r is the rate of decay and [tex]P_o[/tex] the original size.

#We substitute and calculate as:

[tex]P_t=P_oe^{-rt}\\\\=4600e^{-13\times 0.0775}\\\\=1679.60[/tex]

Hence, the forest covers [tex]1679.60\ km^2[/tex] after 13 years.